LogarithmicAxis.html 110 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148114911501151115211531154115511561157115811591160116111621163
  1. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
  2. <html lang="en">
  3. <head>
  4. <title>Source code</title>
  5. <link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style">
  6. </head>
  7. <body>
  8. <div class="sourceContainer">
  9. <pre><span class="sourceLineNo">001</span>/* ===========================================================<a name="line.1"></a>
  10. <span class="sourceLineNo">002</span> * JFreeChart : a free chart library for the Java(tm) platform<a name="line.2"></a>
  11. <span class="sourceLineNo">003</span> * ===========================================================<a name="line.3"></a>
  12. <span class="sourceLineNo">004</span> *<a name="line.4"></a>
  13. <span class="sourceLineNo">005</span> * (C) Copyright 2000-2014, by Object Refinery Limited and Contributors.<a name="line.5"></a>
  14. <span class="sourceLineNo">006</span> *<a name="line.6"></a>
  15. <span class="sourceLineNo">007</span> * Project Info: http://www.jfree.org/jfreechart/index.html<a name="line.7"></a>
  16. <span class="sourceLineNo">008</span> *<a name="line.8"></a>
  17. <span class="sourceLineNo">009</span> * This library is free software; you can redistribute it and/or modify it<a name="line.9"></a>
  18. <span class="sourceLineNo">010</span> * under the terms of the GNU Lesser General Public License as published by<a name="line.10"></a>
  19. <span class="sourceLineNo">011</span> * the Free Software Foundation; either version 2.1 of the License, or<a name="line.11"></a>
  20. <span class="sourceLineNo">012</span> * (at your option) any later version.<a name="line.12"></a>
  21. <span class="sourceLineNo">013</span> *<a name="line.13"></a>
  22. <span class="sourceLineNo">014</span> * This library is distributed in the hope that it will be useful, but<a name="line.14"></a>
  23. <span class="sourceLineNo">015</span> * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY<a name="line.15"></a>
  24. <span class="sourceLineNo">016</span> * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public<a name="line.16"></a>
  25. <span class="sourceLineNo">017</span> * License for more details.<a name="line.17"></a>
  26. <span class="sourceLineNo">018</span> *<a name="line.18"></a>
  27. <span class="sourceLineNo">019</span> * You should have received a copy of the GNU Lesser General Public<a name="line.19"></a>
  28. <span class="sourceLineNo">020</span> * License along with this library; if not, write to the Free Software<a name="line.20"></a>
  29. <span class="sourceLineNo">021</span> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,<a name="line.21"></a>
  30. <span class="sourceLineNo">022</span> * USA.<a name="line.22"></a>
  31. <span class="sourceLineNo">023</span> *<a name="line.23"></a>
  32. <span class="sourceLineNo">024</span> * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. <a name="line.24"></a>
  33. <span class="sourceLineNo">025</span> * Other names may be trademarks of their respective owners.]<a name="line.25"></a>
  34. <span class="sourceLineNo">026</span> *<a name="line.26"></a>
  35. <span class="sourceLineNo">027</span> * --------------------<a name="line.27"></a>
  36. <span class="sourceLineNo">028</span> * LogarithmicAxis.java<a name="line.28"></a>
  37. <span class="sourceLineNo">029</span> * --------------------<a name="line.29"></a>
  38. <span class="sourceLineNo">030</span> * (C) Copyright 2000-2014, by Object Refinery Limited and Contributors.<a name="line.30"></a>
  39. <span class="sourceLineNo">031</span> *<a name="line.31"></a>
  40. <span class="sourceLineNo">032</span> * Original Author: Michael Duffy / Eric Thomas;<a name="line.32"></a>
  41. <span class="sourceLineNo">033</span> * Contributor(s): David Gilbert (for Object Refinery Limited);<a name="line.33"></a>
  42. <span class="sourceLineNo">034</span> * David M. O'Donnell;<a name="line.34"></a>
  43. <span class="sourceLineNo">035</span> * Scott Sams;<a name="line.35"></a>
  44. <span class="sourceLineNo">036</span> * Sergei Ivanov;<a name="line.36"></a>
  45. <span class="sourceLineNo">037</span> *<a name="line.37"></a>
  46. <span class="sourceLineNo">038</span> * Changes<a name="line.38"></a>
  47. <span class="sourceLineNo">039</span> * -------<a name="line.39"></a>
  48. <span class="sourceLineNo">040</span> * 14-Mar-2002 : Version 1 contributed by Michael Duffy (DG);<a name="line.40"></a>
  49. <span class="sourceLineNo">041</span> * 19-Apr-2002 : drawVerticalString() is now drawRotatedString() in<a name="line.41"></a>
  50. <span class="sourceLineNo">042</span> * RefineryUtilities (DG);<a name="line.42"></a>
  51. <span class="sourceLineNo">043</span> * 23-Apr-2002 : Added a range property (DG);<a name="line.43"></a>
  52. <span class="sourceLineNo">044</span> * 15-May-2002 : Modified to be able to deal with negative and zero values (via<a name="line.44"></a>
  53. <span class="sourceLineNo">045</span> * new 'adjustedLog10()' method); occurrences of "Math.log(10)"<a name="line.45"></a>
  54. <span class="sourceLineNo">046</span> * changed to "LOG10_VALUE"; changed 'intValue()' to<a name="line.46"></a>
  55. <span class="sourceLineNo">047</span> * 'longValue()' in 'refreshTicks()' to fix label-text value<a name="line.47"></a>
  56. <span class="sourceLineNo">048</span> * out-of-range problem; removed 'draw()' method; added<a name="line.48"></a>
  57. <span class="sourceLineNo">049</span> * 'autoRangeMinimumSize' check; added 'log10TickLabelsFlag'<a name="line.49"></a>
  58. <span class="sourceLineNo">050</span> * parameter flag and implementation (ET);<a name="line.50"></a>
  59. <span class="sourceLineNo">051</span> * 25-Jun-2002 : Removed redundant import (DG);<a name="line.51"></a>
  60. <span class="sourceLineNo">052</span> * 25-Jul-2002 : Changed order of parameters in ValueAxis constructor (DG);<a name="line.52"></a>
  61. <span class="sourceLineNo">053</span> * 16-Jul-2002 : Implemented support for plotting positive values arbitrarily<a name="line.53"></a>
  62. <span class="sourceLineNo">054</span> * close to zero (added 'allowNegativesFlag' flag) (ET).<a name="line.54"></a>
  63. <span class="sourceLineNo">055</span> * 05-Sep-2002 : Updated constructor reflecting changes in the Axis class (DG);<a name="line.55"></a>
  64. <span class="sourceLineNo">056</span> * 02-Oct-2002 : Fixed errors reported by Checkstyle (DG);<a name="line.56"></a>
  65. <span class="sourceLineNo">057</span> * 08-Nov-2002 : Moved to new package com.jrefinery.chart.axis (DG);<a name="line.57"></a>
  66. <span class="sourceLineNo">058</span> * 22-Nov-2002 : Bug fixes from David M. O'Donnell (DG);<a name="line.58"></a>
  67. <span class="sourceLineNo">059</span> * 14-Jan-2003 : Changed autoRangeMinimumSize from Number --&gt; double (DG);<a name="line.59"></a>
  68. <span class="sourceLineNo">060</span> * 20-Jan-2003 : Removed unnecessary constructors (DG);<a name="line.60"></a>
  69. <span class="sourceLineNo">061</span> * 26-Mar-2003 : Implemented Serializable (DG);<a name="line.61"></a>
  70. <span class="sourceLineNo">062</span> * 08-May-2003 : Fixed plotting of datasets with lower==upper bounds when<a name="line.62"></a>
  71. <span class="sourceLineNo">063</span> * 'minAutoRange' is very small; added 'strictValuesFlag'<a name="line.63"></a>
  72. <span class="sourceLineNo">064</span> * and default functionality of throwing a runtime exception<a name="line.64"></a>
  73. <span class="sourceLineNo">065</span> * if 'allowNegativesFlag' is false and any values are less<a name="line.65"></a>
  74. <span class="sourceLineNo">066</span> * than or equal to zero; added 'expTickLabelsFlag' and<a name="line.66"></a>
  75. <span class="sourceLineNo">067</span> * changed to use "1e#"-style tick labels by default<a name="line.67"></a>
  76. <span class="sourceLineNo">068</span> * ("10^n"-style tick labels still supported via 'set'<a name="line.68"></a>
  77. <span class="sourceLineNo">069</span> * method); improved generation of tick labels when range of<a name="line.69"></a>
  78. <span class="sourceLineNo">070</span> * values is small; changed to use 'NumberFormat.getInstance()'<a name="line.70"></a>
  79. <span class="sourceLineNo">071</span> * to create 'numberFormatterObj' (ET);<a name="line.71"></a>
  80. <span class="sourceLineNo">072</span> * 14-May-2003 : Merged HorizontalLogarithmicAxis and<a name="line.72"></a>
  81. <span class="sourceLineNo">073</span> * VerticalLogarithmicAxis (DG);<a name="line.73"></a>
  82. <span class="sourceLineNo">074</span> * 29-Oct-2003 : Added workaround for font alignment in PDF output (DG);<a name="line.74"></a>
  83. <span class="sourceLineNo">075</span> * 07-Nov-2003 : Modified to use new NumberTick class (DG);<a name="line.75"></a>
  84. <span class="sourceLineNo">076</span> * 08-Apr-2004 : Use numberFormatOverride if set - see patch 930139 (DG);<a name="line.76"></a>
  85. <span class="sourceLineNo">077</span> * 11-Jan-2005 : Removed deprecated code in preparation for 1.0.0 release (DG);<a name="line.77"></a>
  86. <span class="sourceLineNo">078</span> * 21-Apr-2005 : Added support for upper and lower margins; added<a name="line.78"></a>
  87. <span class="sourceLineNo">079</span> * get/setAutoRangeNextLogFlag() methods and changed<a name="line.79"></a>
  88. <span class="sourceLineNo">080</span> * default to 'autoRangeNextLogFlag'==false (ET);<a name="line.80"></a>
  89. <span class="sourceLineNo">081</span> * 22-Apr-2005 : Removed refreshTicks() and fixed names and parameters for<a name="line.81"></a>
  90. <span class="sourceLineNo">082</span> * refreshHorizontalTicks() &amp; refreshVerticalTicks();<a name="line.82"></a>
  91. <span class="sourceLineNo">083</span> * changed javadoc on setExpTickLabelsFlag() to specify<a name="line.83"></a>
  92. <span class="sourceLineNo">084</span> * proper default (ET);<a name="line.84"></a>
  93. <span class="sourceLineNo">085</span> * 22-Apr-2005 : Renamed refreshHorizontalTicks --&gt; refreshTicksHorizontal<a name="line.85"></a>
  94. <span class="sourceLineNo">086</span> * (and likewise the vertical version) for consistency with<a name="line.86"></a>
  95. <span class="sourceLineNo">087</span> * other axis classes (DG);<a name="line.87"></a>
  96. <span class="sourceLineNo">088</span> * ------------- JFREECHART 1.0.x ---------------------------------------------<a name="line.88"></a>
  97. <span class="sourceLineNo">089</span> * 02-Feb-2007 : Removed author tags all over JFreeChart sources (DG);<a name="line.89"></a>
  98. <span class="sourceLineNo">090</span> * 02-Mar-2007 : Applied patch 1671069 to fix zooming (DG);<a name="line.90"></a>
  99. <span class="sourceLineNo">091</span> * 22-Mar-2007 : Use new defaultAutoRange attribute (DG);<a name="line.91"></a>
  100. <span class="sourceLineNo">092</span> *<a name="line.92"></a>
  101. <span class="sourceLineNo">093</span> */<a name="line.93"></a>
  102. <span class="sourceLineNo">094</span><a name="line.94"></a>
  103. <span class="sourceLineNo">095</span>package org.jfree.chart.axis;<a name="line.95"></a>
  104. <span class="sourceLineNo">096</span><a name="line.96"></a>
  105. <span class="sourceLineNo">097</span>import java.awt.Graphics2D;<a name="line.97"></a>
  106. <span class="sourceLineNo">098</span>import java.awt.geom.Rectangle2D;<a name="line.98"></a>
  107. <span class="sourceLineNo">099</span>import java.text.DecimalFormat;<a name="line.99"></a>
  108. <span class="sourceLineNo">100</span>import java.text.NumberFormat;<a name="line.100"></a>
  109. <span class="sourceLineNo">101</span>import java.util.List;<a name="line.101"></a>
  110. <span class="sourceLineNo">102</span><a name="line.102"></a>
  111. <span class="sourceLineNo">103</span>import org.jfree.chart.plot.Plot;<a name="line.103"></a>
  112. <span class="sourceLineNo">104</span>import org.jfree.chart.plot.ValueAxisPlot;<a name="line.104"></a>
  113. <span class="sourceLineNo">105</span>import org.jfree.data.Range;<a name="line.105"></a>
  114. <span class="sourceLineNo">106</span>import org.jfree.ui.RectangleEdge;<a name="line.106"></a>
  115. <span class="sourceLineNo">107</span>import org.jfree.ui.TextAnchor;<a name="line.107"></a>
  116. <span class="sourceLineNo">108</span><a name="line.108"></a>
  117. <span class="sourceLineNo">109</span>/**<a name="line.109"></a>
  118. <span class="sourceLineNo">110</span> * A numerical axis that uses a logarithmic scale.<a name="line.110"></a>
  119. <span class="sourceLineNo">111</span> */<a name="line.111"></a>
  120. <span class="sourceLineNo">112</span>public class LogarithmicAxis extends NumberAxis {<a name="line.112"></a>
  121. <span class="sourceLineNo">113</span><a name="line.113"></a>
  122. <span class="sourceLineNo">114</span> /** For serialization. */<a name="line.114"></a>
  123. <span class="sourceLineNo">115</span> private static final long serialVersionUID = 2502918599004103054L;<a name="line.115"></a>
  124. <span class="sourceLineNo">116</span><a name="line.116"></a>
  125. <span class="sourceLineNo">117</span> /** Useful constant for log(10). */<a name="line.117"></a>
  126. <span class="sourceLineNo">118</span> public static final double LOG10_VALUE = Math.log(10.0);<a name="line.118"></a>
  127. <span class="sourceLineNo">119</span><a name="line.119"></a>
  128. <span class="sourceLineNo">120</span> /** Smallest arbitrarily-close-to-zero value allowed. */<a name="line.120"></a>
  129. <span class="sourceLineNo">121</span> public static final double SMALL_LOG_VALUE = 1e-100;<a name="line.121"></a>
  130. <span class="sourceLineNo">122</span><a name="line.122"></a>
  131. <span class="sourceLineNo">123</span> /** Flag set true to allow negative values in data. */<a name="line.123"></a>
  132. <span class="sourceLineNo">124</span> protected boolean allowNegativesFlag = false;<a name="line.124"></a>
  133. <span class="sourceLineNo">125</span><a name="line.125"></a>
  134. <span class="sourceLineNo">126</span> /**<a name="line.126"></a>
  135. <span class="sourceLineNo">127</span> * Flag set true make axis throw exception if any values are &amp;lt;= 0 and <a name="line.127"></a>
  136. <span class="sourceLineNo">128</span> * 'allowNegativesFlag' is false.<a name="line.128"></a>
  137. <span class="sourceLineNo">129</span> */<a name="line.129"></a>
  138. <span class="sourceLineNo">130</span> protected boolean strictValuesFlag = true;<a name="line.130"></a>
  139. <span class="sourceLineNo">131</span><a name="line.131"></a>
  140. <span class="sourceLineNo">132</span> /** Number formatter for generating numeric strings. */<a name="line.132"></a>
  141. <span class="sourceLineNo">133</span> protected final NumberFormat numberFormatterObj<a name="line.133"></a>
  142. <span class="sourceLineNo">134</span> = NumberFormat.getInstance();<a name="line.134"></a>
  143. <span class="sourceLineNo">135</span><a name="line.135"></a>
  144. <span class="sourceLineNo">136</span> /** Flag set true for "1e#"-style tick labels. */<a name="line.136"></a>
  145. <span class="sourceLineNo">137</span> protected boolean expTickLabelsFlag = false;<a name="line.137"></a>
  146. <span class="sourceLineNo">138</span><a name="line.138"></a>
  147. <span class="sourceLineNo">139</span> /** Flag set true for "10^n"-style tick labels. */<a name="line.139"></a>
  148. <span class="sourceLineNo">140</span> protected boolean log10TickLabelsFlag = false;<a name="line.140"></a>
  149. <span class="sourceLineNo">141</span><a name="line.141"></a>
  150. <span class="sourceLineNo">142</span> /** True to make 'autoAdjustRange()' select "10^n" values. */<a name="line.142"></a>
  151. <span class="sourceLineNo">143</span> protected boolean autoRangeNextLogFlag = false;<a name="line.143"></a>
  152. <span class="sourceLineNo">144</span><a name="line.144"></a>
  153. <span class="sourceLineNo">145</span> /** Helper flag for log axis processing. */<a name="line.145"></a>
  154. <span class="sourceLineNo">146</span> protected boolean smallLogFlag = false;<a name="line.146"></a>
  155. <span class="sourceLineNo">147</span><a name="line.147"></a>
  156. <span class="sourceLineNo">148</span> /**<a name="line.148"></a>
  157. <span class="sourceLineNo">149</span> * Creates a new axis.<a name="line.149"></a>
  158. <span class="sourceLineNo">150</span> *<a name="line.150"></a>
  159. <span class="sourceLineNo">151</span> * @param label the axis label.<a name="line.151"></a>
  160. <span class="sourceLineNo">152</span> */<a name="line.152"></a>
  161. <span class="sourceLineNo">153</span> public LogarithmicAxis(String label) {<a name="line.153"></a>
  162. <span class="sourceLineNo">154</span> super(label);<a name="line.154"></a>
  163. <span class="sourceLineNo">155</span> setupNumberFmtObj(); //setup number formatter obj<a name="line.155"></a>
  164. <span class="sourceLineNo">156</span> }<a name="line.156"></a>
  165. <span class="sourceLineNo">157</span><a name="line.157"></a>
  166. <span class="sourceLineNo">158</span> /**<a name="line.158"></a>
  167. <span class="sourceLineNo">159</span> * Sets the 'allowNegativesFlag' flag; true to allow negative values<a name="line.159"></a>
  168. <span class="sourceLineNo">160</span> * in data, false to be able to plot positive values arbitrarily close to<a name="line.160"></a>
  169. <span class="sourceLineNo">161</span> * zero.<a name="line.161"></a>
  170. <span class="sourceLineNo">162</span> *<a name="line.162"></a>
  171. <span class="sourceLineNo">163</span> * @param flgVal the new value of the flag.<a name="line.163"></a>
  172. <span class="sourceLineNo">164</span> */<a name="line.164"></a>
  173. <span class="sourceLineNo">165</span> public void setAllowNegativesFlag(boolean flgVal) {<a name="line.165"></a>
  174. <span class="sourceLineNo">166</span> this.allowNegativesFlag = flgVal;<a name="line.166"></a>
  175. <span class="sourceLineNo">167</span> }<a name="line.167"></a>
  176. <span class="sourceLineNo">168</span><a name="line.168"></a>
  177. <span class="sourceLineNo">169</span> /**<a name="line.169"></a>
  178. <span class="sourceLineNo">170</span> * Returns the 'allowNegativesFlag' flag; true to allow negative values<a name="line.170"></a>
  179. <span class="sourceLineNo">171</span> * in data, false to be able to plot positive values arbitrarily close<a name="line.171"></a>
  180. <span class="sourceLineNo">172</span> * to zero.<a name="line.172"></a>
  181. <span class="sourceLineNo">173</span> *<a name="line.173"></a>
  182. <span class="sourceLineNo">174</span> * @return The flag.<a name="line.174"></a>
  183. <span class="sourceLineNo">175</span> */<a name="line.175"></a>
  184. <span class="sourceLineNo">176</span> public boolean getAllowNegativesFlag() {<a name="line.176"></a>
  185. <span class="sourceLineNo">177</span> return this.allowNegativesFlag;<a name="line.177"></a>
  186. <span class="sourceLineNo">178</span> }<a name="line.178"></a>
  187. <span class="sourceLineNo">179</span><a name="line.179"></a>
  188. <span class="sourceLineNo">180</span> /**<a name="line.180"></a>
  189. <span class="sourceLineNo">181</span> * Sets the 'strictValuesFlag' flag; if true and 'allowNegativesFlag'<a name="line.181"></a>
  190. <span class="sourceLineNo">182</span> * is false then this axis will throw a runtime exception if any of its<a name="line.182"></a>
  191. <span class="sourceLineNo">183</span> * values are less than or equal to zero; if false then the axis will<a name="line.183"></a>
  192. <span class="sourceLineNo">184</span> * adjust for values less than or equal to zero as needed.<a name="line.184"></a>
  193. <span class="sourceLineNo">185</span> *<a name="line.185"></a>
  194. <span class="sourceLineNo">186</span> * @param flgVal true for strict enforcement.<a name="line.186"></a>
  195. <span class="sourceLineNo">187</span> */<a name="line.187"></a>
  196. <span class="sourceLineNo">188</span> public void setStrictValuesFlag(boolean flgVal) {<a name="line.188"></a>
  197. <span class="sourceLineNo">189</span> this.strictValuesFlag = flgVal;<a name="line.189"></a>
  198. <span class="sourceLineNo">190</span> }<a name="line.190"></a>
  199. <span class="sourceLineNo">191</span><a name="line.191"></a>
  200. <span class="sourceLineNo">192</span> /**<a name="line.192"></a>
  201. <span class="sourceLineNo">193</span> * Returns the 'strictValuesFlag' flag; if true and 'allowNegativesFlag'<a name="line.193"></a>
  202. <span class="sourceLineNo">194</span> * is false then this axis will throw a runtime exception if any of its<a name="line.194"></a>
  203. <span class="sourceLineNo">195</span> * values are less than or equal to zero; if false then the axis will<a name="line.195"></a>
  204. <span class="sourceLineNo">196</span> * adjust for values less than or equal to zero as needed.<a name="line.196"></a>
  205. <span class="sourceLineNo">197</span> *<a name="line.197"></a>
  206. <span class="sourceLineNo">198</span> * @return &lt;code&gt;true&lt;/code&gt; if strict enforcement is enabled.<a name="line.198"></a>
  207. <span class="sourceLineNo">199</span> */<a name="line.199"></a>
  208. <span class="sourceLineNo">200</span> public boolean getStrictValuesFlag() {<a name="line.200"></a>
  209. <span class="sourceLineNo">201</span> return this.strictValuesFlag;<a name="line.201"></a>
  210. <span class="sourceLineNo">202</span> }<a name="line.202"></a>
  211. <span class="sourceLineNo">203</span><a name="line.203"></a>
  212. <span class="sourceLineNo">204</span> /**<a name="line.204"></a>
  213. <span class="sourceLineNo">205</span> * Sets the 'expTickLabelsFlag' flag. If the 'log10TickLabelsFlag'<a name="line.205"></a>
  214. <span class="sourceLineNo">206</span> * is false then this will set whether or not "1e#"-style tick labels<a name="line.206"></a>
  215. <span class="sourceLineNo">207</span> * are used. The default is to use regular numeric tick labels.<a name="line.207"></a>
  216. <span class="sourceLineNo">208</span> *<a name="line.208"></a>
  217. <span class="sourceLineNo">209</span> * @param flgVal true for "1e#"-style tick labels, false for<a name="line.209"></a>
  218. <span class="sourceLineNo">210</span> * log10 or regular numeric tick labels.<a name="line.210"></a>
  219. <span class="sourceLineNo">211</span> */<a name="line.211"></a>
  220. <span class="sourceLineNo">212</span> public void setExpTickLabelsFlag(boolean flgVal) {<a name="line.212"></a>
  221. <span class="sourceLineNo">213</span> this.expTickLabelsFlag = flgVal;<a name="line.213"></a>
  222. <span class="sourceLineNo">214</span> setupNumberFmtObj(); //setup number formatter obj<a name="line.214"></a>
  223. <span class="sourceLineNo">215</span> }<a name="line.215"></a>
  224. <span class="sourceLineNo">216</span><a name="line.216"></a>
  225. <span class="sourceLineNo">217</span> /**<a name="line.217"></a>
  226. <span class="sourceLineNo">218</span> * Returns the 'expTickLabelsFlag' flag.<a name="line.218"></a>
  227. <span class="sourceLineNo">219</span> *<a name="line.219"></a>
  228. <span class="sourceLineNo">220</span> * @return &lt;code&gt;true&lt;/code&gt; for "1e#"-style tick labels,<a name="line.220"></a>
  229. <span class="sourceLineNo">221</span> * &lt;code&gt;false&lt;/code&gt; for log10 or regular numeric tick labels.<a name="line.221"></a>
  230. <span class="sourceLineNo">222</span> */<a name="line.222"></a>
  231. <span class="sourceLineNo">223</span> public boolean getExpTickLabelsFlag() {<a name="line.223"></a>
  232. <span class="sourceLineNo">224</span> return this.expTickLabelsFlag;<a name="line.224"></a>
  233. <span class="sourceLineNo">225</span> }<a name="line.225"></a>
  234. <span class="sourceLineNo">226</span><a name="line.226"></a>
  235. <span class="sourceLineNo">227</span> /**<a name="line.227"></a>
  236. <span class="sourceLineNo">228</span> * Sets the 'log10TickLabelsFlag' flag. The default value is false.<a name="line.228"></a>
  237. <span class="sourceLineNo">229</span> *<a name="line.229"></a>
  238. <span class="sourceLineNo">230</span> * @param flag true for "10^n"-style tick labels, false for "1e#"-style<a name="line.230"></a>
  239. <span class="sourceLineNo">231</span> * or regular numeric tick labels.<a name="line.231"></a>
  240. <span class="sourceLineNo">232</span> */<a name="line.232"></a>
  241. <span class="sourceLineNo">233</span> public void setLog10TickLabelsFlag(boolean flag) {<a name="line.233"></a>
  242. <span class="sourceLineNo">234</span> this.log10TickLabelsFlag = flag;<a name="line.234"></a>
  243. <span class="sourceLineNo">235</span> }<a name="line.235"></a>
  244. <span class="sourceLineNo">236</span><a name="line.236"></a>
  245. <span class="sourceLineNo">237</span> /**<a name="line.237"></a>
  246. <span class="sourceLineNo">238</span> * Returns the 'log10TickLabelsFlag' flag.<a name="line.238"></a>
  247. <span class="sourceLineNo">239</span> *<a name="line.239"></a>
  248. <span class="sourceLineNo">240</span> * @return &lt;code&gt;true&lt;/code&gt; for "10^n"-style tick labels,<a name="line.240"></a>
  249. <span class="sourceLineNo">241</span> * &lt;code&gt;false&lt;/code&gt; for "1e#"-style or regular numeric tick<a name="line.241"></a>
  250. <span class="sourceLineNo">242</span> * labels.<a name="line.242"></a>
  251. <span class="sourceLineNo">243</span> */<a name="line.243"></a>
  252. <span class="sourceLineNo">244</span> public boolean getLog10TickLabelsFlag() {<a name="line.244"></a>
  253. <span class="sourceLineNo">245</span> return this.log10TickLabelsFlag;<a name="line.245"></a>
  254. <span class="sourceLineNo">246</span> }<a name="line.246"></a>
  255. <span class="sourceLineNo">247</span><a name="line.247"></a>
  256. <span class="sourceLineNo">248</span> /**<a name="line.248"></a>
  257. <span class="sourceLineNo">249</span> * Sets the 'autoRangeNextLogFlag' flag. This determines whether or<a name="line.249"></a>
  258. <span class="sourceLineNo">250</span> * not the 'autoAdjustRange()' method will select the next "10^n"<a name="line.250"></a>
  259. <span class="sourceLineNo">251</span> * values when determining the upper and lower bounds. The default<a name="line.251"></a>
  260. <span class="sourceLineNo">252</span> * value is false.<a name="line.252"></a>
  261. <span class="sourceLineNo">253</span> *<a name="line.253"></a>
  262. <span class="sourceLineNo">254</span> * @param flag &lt;code&gt;true&lt;/code&gt; to make the 'autoAdjustRange()'<a name="line.254"></a>
  263. <span class="sourceLineNo">255</span> * method select the next "10^n" values, &lt;code&gt;false&lt;/code&gt; to not.<a name="line.255"></a>
  264. <span class="sourceLineNo">256</span> */<a name="line.256"></a>
  265. <span class="sourceLineNo">257</span> public void setAutoRangeNextLogFlag(boolean flag) {<a name="line.257"></a>
  266. <span class="sourceLineNo">258</span> this.autoRangeNextLogFlag = flag;<a name="line.258"></a>
  267. <span class="sourceLineNo">259</span> }<a name="line.259"></a>
  268. <span class="sourceLineNo">260</span><a name="line.260"></a>
  269. <span class="sourceLineNo">261</span> /**<a name="line.261"></a>
  270. <span class="sourceLineNo">262</span> * Returns the 'autoRangeNextLogFlag' flag.<a name="line.262"></a>
  271. <span class="sourceLineNo">263</span> *<a name="line.263"></a>
  272. <span class="sourceLineNo">264</span> * @return &lt;code&gt;true&lt;/code&gt; if the 'autoAdjustRange()' method will<a name="line.264"></a>
  273. <span class="sourceLineNo">265</span> * select the next "10^n" values, &lt;code&gt;false&lt;/code&gt; if not.<a name="line.265"></a>
  274. <span class="sourceLineNo">266</span> */<a name="line.266"></a>
  275. <span class="sourceLineNo">267</span> public boolean getAutoRangeNextLogFlag() {<a name="line.267"></a>
  276. <span class="sourceLineNo">268</span> return this.autoRangeNextLogFlag;<a name="line.268"></a>
  277. <span class="sourceLineNo">269</span> }<a name="line.269"></a>
  278. <span class="sourceLineNo">270</span><a name="line.270"></a>
  279. <span class="sourceLineNo">271</span> /**<a name="line.271"></a>
  280. <span class="sourceLineNo">272</span> * Overridden version that calls original and then sets up flag for<a name="line.272"></a>
  281. <span class="sourceLineNo">273</span> * log axis processing.<a name="line.273"></a>
  282. <span class="sourceLineNo">274</span> *<a name="line.274"></a>
  283. <span class="sourceLineNo">275</span> * @param range the new range.<a name="line.275"></a>
  284. <span class="sourceLineNo">276</span> */<a name="line.276"></a>
  285. <span class="sourceLineNo">277</span> @Override<a name="line.277"></a>
  286. <span class="sourceLineNo">278</span> public void setRange(Range range) {<a name="line.278"></a>
  287. <span class="sourceLineNo">279</span> super.setRange(range); // call parent method<a name="line.279"></a>
  288. <span class="sourceLineNo">280</span> setupSmallLogFlag(); // setup flag based on bounds values<a name="line.280"></a>
  289. <span class="sourceLineNo">281</span> }<a name="line.281"></a>
  290. <span class="sourceLineNo">282</span><a name="line.282"></a>
  291. <span class="sourceLineNo">283</span> /**<a name="line.283"></a>
  292. <span class="sourceLineNo">284</span> * Sets up flag for log axis processing. Set true if negative values<a name="line.284"></a>
  293. <span class="sourceLineNo">285</span> * not allowed and the lower bound is between 0 and 10.<a name="line.285"></a>
  294. <span class="sourceLineNo">286</span> */<a name="line.286"></a>
  295. <span class="sourceLineNo">287</span> protected void setupSmallLogFlag() {<a name="line.287"></a>
  296. <span class="sourceLineNo">288</span> // set flag true if negative values not allowed and the<a name="line.288"></a>
  297. <span class="sourceLineNo">289</span> // lower bound is between 0 and 10:<a name="line.289"></a>
  298. <span class="sourceLineNo">290</span> double lowerVal = getRange().getLowerBound();<a name="line.290"></a>
  299. <span class="sourceLineNo">291</span> this.smallLogFlag = (!this.allowNegativesFlag &amp;&amp; lowerVal &lt; 10.0<a name="line.291"></a>
  300. <span class="sourceLineNo">292</span> &amp;&amp; lowerVal &gt; 0.0);<a name="line.292"></a>
  301. <span class="sourceLineNo">293</span> }<a name="line.293"></a>
  302. <span class="sourceLineNo">294</span><a name="line.294"></a>
  303. <span class="sourceLineNo">295</span> /**<a name="line.295"></a>
  304. <span class="sourceLineNo">296</span> * Sets up the number formatter object according to the<a name="line.296"></a>
  305. <span class="sourceLineNo">297</span> * 'expTickLabelsFlag' flag.<a name="line.297"></a>
  306. <span class="sourceLineNo">298</span> */<a name="line.298"></a>
  307. <span class="sourceLineNo">299</span> protected void setupNumberFmtObj() {<a name="line.299"></a>
  308. <span class="sourceLineNo">300</span> if (this.numberFormatterObj instanceof DecimalFormat) {<a name="line.300"></a>
  309. <span class="sourceLineNo">301</span> //setup for "1e#"-style tick labels or regular<a name="line.301"></a>
  310. <span class="sourceLineNo">302</span> // numeric tick labels, depending on flag:<a name="line.302"></a>
  311. <span class="sourceLineNo">303</span> ((DecimalFormat) this.numberFormatterObj).applyPattern(<a name="line.303"></a>
  312. <span class="sourceLineNo">304</span> this.expTickLabelsFlag ? "0E0" : "0.###");<a name="line.304"></a>
  313. <span class="sourceLineNo">305</span> }<a name="line.305"></a>
  314. <span class="sourceLineNo">306</span> }<a name="line.306"></a>
  315. <span class="sourceLineNo">307</span><a name="line.307"></a>
  316. <span class="sourceLineNo">308</span> /**<a name="line.308"></a>
  317. <span class="sourceLineNo">309</span> * Returns the log10 value, depending on if values between 0 and<a name="line.309"></a>
  318. <span class="sourceLineNo">310</span> * 1 are being plotted. If negative values are not allowed and<a name="line.310"></a>
  319. <span class="sourceLineNo">311</span> * the lower bound is between 0 and 10 then a normal log is<a name="line.311"></a>
  320. <span class="sourceLineNo">312</span> * returned; otherwise the returned value is adjusted if the<a name="line.312"></a>
  321. <span class="sourceLineNo">313</span> * given value is less than 10.<a name="line.313"></a>
  322. <span class="sourceLineNo">314</span> *<a name="line.314"></a>
  323. <span class="sourceLineNo">315</span> * @param val the value.<a name="line.315"></a>
  324. <span class="sourceLineNo">316</span> *<a name="line.316"></a>
  325. <span class="sourceLineNo">317</span> * @return log&lt;sub&gt;10&lt;/sub&gt;(val).<a name="line.317"></a>
  326. <span class="sourceLineNo">318</span> *<a name="line.318"></a>
  327. <span class="sourceLineNo">319</span> * @see #switchedPow10(double)<a name="line.319"></a>
  328. <span class="sourceLineNo">320</span> */<a name="line.320"></a>
  329. <span class="sourceLineNo">321</span> protected double switchedLog10(double val) {<a name="line.321"></a>
  330. <span class="sourceLineNo">322</span> return this.smallLogFlag ? Math.log(val)<a name="line.322"></a>
  331. <span class="sourceLineNo">323</span> / LOG10_VALUE : adjustedLog10(val);<a name="line.323"></a>
  332. <span class="sourceLineNo">324</span> }<a name="line.324"></a>
  333. <span class="sourceLineNo">325</span><a name="line.325"></a>
  334. <span class="sourceLineNo">326</span> /**<a name="line.326"></a>
  335. <span class="sourceLineNo">327</span> * Returns a power of 10, depending on if values between 0 and<a name="line.327"></a>
  336. <span class="sourceLineNo">328</span> * 1 are being plotted. If negative values are not allowed and<a name="line.328"></a>
  337. <span class="sourceLineNo">329</span> * the lower bound is between 0 and 10 then a normal power is<a name="line.329"></a>
  338. <span class="sourceLineNo">330</span> * returned; otherwise the returned value is adjusted if the<a name="line.330"></a>
  339. <span class="sourceLineNo">331</span> * given value is less than 1.<a name="line.331"></a>
  340. <span class="sourceLineNo">332</span> *<a name="line.332"></a>
  341. <span class="sourceLineNo">333</span> * @param val the value.<a name="line.333"></a>
  342. <span class="sourceLineNo">334</span> *<a name="line.334"></a>
  343. <span class="sourceLineNo">335</span> * @return 10&lt;sup&gt;val&lt;/sup&gt;.<a name="line.335"></a>
  344. <span class="sourceLineNo">336</span> *<a name="line.336"></a>
  345. <span class="sourceLineNo">337</span> * @since 1.0.5<a name="line.337"></a>
  346. <span class="sourceLineNo">338</span> * @see #switchedLog10(double)<a name="line.338"></a>
  347. <span class="sourceLineNo">339</span> */<a name="line.339"></a>
  348. <span class="sourceLineNo">340</span> public double switchedPow10(double val) {<a name="line.340"></a>
  349. <span class="sourceLineNo">341</span> return this.smallLogFlag ? Math.pow(10.0, val) : adjustedPow10(val);<a name="line.341"></a>
  350. <span class="sourceLineNo">342</span> }<a name="line.342"></a>
  351. <span class="sourceLineNo">343</span><a name="line.343"></a>
  352. <span class="sourceLineNo">344</span> /**<a name="line.344"></a>
  353. <span class="sourceLineNo">345</span> * Returns an adjusted log10 value for graphing purposes. The first<a name="line.345"></a>
  354. <span class="sourceLineNo">346</span> * adjustment is that negative values are changed to positive during<a name="line.346"></a>
  355. <span class="sourceLineNo">347</span> * the calculations, and then the answer is negated at the end. The<a name="line.347"></a>
  356. <span class="sourceLineNo">348</span> * second is that, for values less than 10, an increasingly large<a name="line.348"></a>
  357. <span class="sourceLineNo">349</span> * (0 to 1) scaling factor is added such that at 0 the value is<a name="line.349"></a>
  358. <span class="sourceLineNo">350</span> * adjusted to 1, resulting in a returned result of 0.<a name="line.350"></a>
  359. <span class="sourceLineNo">351</span> *<a name="line.351"></a>
  360. <span class="sourceLineNo">352</span> * @param val value for which log10 should be calculated.<a name="line.352"></a>
  361. <span class="sourceLineNo">353</span> *<a name="line.353"></a>
  362. <span class="sourceLineNo">354</span> * @return An adjusted log&lt;sub&gt;10&lt;/sub&gt;(val).<a name="line.354"></a>
  363. <span class="sourceLineNo">355</span> *<a name="line.355"></a>
  364. <span class="sourceLineNo">356</span> * @see #adjustedPow10(double)<a name="line.356"></a>
  365. <span class="sourceLineNo">357</span> */<a name="line.357"></a>
  366. <span class="sourceLineNo">358</span> public double adjustedLog10(double val) {<a name="line.358"></a>
  367. <span class="sourceLineNo">359</span> boolean negFlag = (val &lt; 0.0);<a name="line.359"></a>
  368. <span class="sourceLineNo">360</span> if (negFlag) {<a name="line.360"></a>
  369. <span class="sourceLineNo">361</span> val = -val; // if negative then set flag and make positive<a name="line.361"></a>
  370. <span class="sourceLineNo">362</span> }<a name="line.362"></a>
  371. <span class="sourceLineNo">363</span> if (val &lt; 10.0) { // if &lt; 10 then<a name="line.363"></a>
  372. <span class="sourceLineNo">364</span> val += (10.0 - val) / 10.0; //increase so 0 translates to 0<a name="line.364"></a>
  373. <span class="sourceLineNo">365</span> }<a name="line.365"></a>
  374. <span class="sourceLineNo">366</span> //return value; negate if original value was negative:<a name="line.366"></a>
  375. <span class="sourceLineNo">367</span> double res = Math.log(val) / LOG10_VALUE;<a name="line.367"></a>
  376. <span class="sourceLineNo">368</span> return negFlag ? (-res) : res;<a name="line.368"></a>
  377. <span class="sourceLineNo">369</span> }<a name="line.369"></a>
  378. <span class="sourceLineNo">370</span><a name="line.370"></a>
  379. <span class="sourceLineNo">371</span> /**<a name="line.371"></a>
  380. <span class="sourceLineNo">372</span> * Returns an adjusted power of 10 value for graphing purposes. The first<a name="line.372"></a>
  381. <span class="sourceLineNo">373</span> * adjustment is that negative values are changed to positive during<a name="line.373"></a>
  382. <span class="sourceLineNo">374</span> * the calculations, and then the answer is negated at the end. The<a name="line.374"></a>
  383. <span class="sourceLineNo">375</span> * second is that, for values less than 1, a progressive logarithmic<a name="line.375"></a>
  384. <span class="sourceLineNo">376</span> * offset is subtracted such that at 0 the returned result is also 0.<a name="line.376"></a>
  385. <span class="sourceLineNo">377</span> *<a name="line.377"></a>
  386. <span class="sourceLineNo">378</span> * @param val value for which power of 10 should be calculated.<a name="line.378"></a>
  387. <span class="sourceLineNo">379</span> *<a name="line.379"></a>
  388. <span class="sourceLineNo">380</span> * @return An adjusted 10&lt;sup&gt;val&lt;/sup&gt;.<a name="line.380"></a>
  389. <span class="sourceLineNo">381</span> *<a name="line.381"></a>
  390. <span class="sourceLineNo">382</span> * @since 1.0.5<a name="line.382"></a>
  391. <span class="sourceLineNo">383</span> * @see #adjustedLog10(double)<a name="line.383"></a>
  392. <span class="sourceLineNo">384</span> */<a name="line.384"></a>
  393. <span class="sourceLineNo">385</span> public double adjustedPow10(double val) {<a name="line.385"></a>
  394. <span class="sourceLineNo">386</span> boolean negFlag = (val &lt; 0.0);<a name="line.386"></a>
  395. <span class="sourceLineNo">387</span> if (negFlag) {<a name="line.387"></a>
  396. <span class="sourceLineNo">388</span> val = -val; // if negative then set flag and make positive<a name="line.388"></a>
  397. <span class="sourceLineNo">389</span> }<a name="line.389"></a>
  398. <span class="sourceLineNo">390</span> double res;<a name="line.390"></a>
  399. <span class="sourceLineNo">391</span> if (val &lt; 1.0) {<a name="line.391"></a>
  400. <span class="sourceLineNo">392</span> res = (Math.pow(10, val + 1.0) - 10.0) / 9.0; //invert adjustLog10<a name="line.392"></a>
  401. <span class="sourceLineNo">393</span> }<a name="line.393"></a>
  402. <span class="sourceLineNo">394</span> else {<a name="line.394"></a>
  403. <span class="sourceLineNo">395</span> res = Math.pow(10, val);<a name="line.395"></a>
  404. <span class="sourceLineNo">396</span> }<a name="line.396"></a>
  405. <span class="sourceLineNo">397</span> return negFlag ? (-res) : res;<a name="line.397"></a>
  406. <span class="sourceLineNo">398</span> }<a name="line.398"></a>
  407. <span class="sourceLineNo">399</span><a name="line.399"></a>
  408. <span class="sourceLineNo">400</span> /**<a name="line.400"></a>
  409. <span class="sourceLineNo">401</span> * Returns the largest (closest to positive infinity) double value that is<a name="line.401"></a>
  410. <span class="sourceLineNo">402</span> * not greater than the argument, is equal to a mathematical integer and<a name="line.402"></a>
  411. <span class="sourceLineNo">403</span> * satisfying the condition that log base 10 of the value is an integer<a name="line.403"></a>
  412. <span class="sourceLineNo">404</span> * (i.e., the value returned will be a power of 10: 1, 10, 100, 1000, etc.).<a name="line.404"></a>
  413. <span class="sourceLineNo">405</span> *<a name="line.405"></a>
  414. <span class="sourceLineNo">406</span> * @param lower a double value below which a floor will be calcualted.<a name="line.406"></a>
  415. <span class="sourceLineNo">407</span> *<a name="line.407"></a>
  416. <span class="sourceLineNo">408</span> * @return 10&lt;sup&gt;N&lt;/sup&gt; with N .. { 1 ... }<a name="line.408"></a>
  417. <span class="sourceLineNo">409</span> */<a name="line.409"></a>
  418. <span class="sourceLineNo">410</span> protected double computeLogFloor(double lower) {<a name="line.410"></a>
  419. <span class="sourceLineNo">411</span><a name="line.411"></a>
  420. <span class="sourceLineNo">412</span> double logFloor;<a name="line.412"></a>
  421. <span class="sourceLineNo">413</span> if (this.allowNegativesFlag) {<a name="line.413"></a>
  422. <span class="sourceLineNo">414</span> //negative values are allowed<a name="line.414"></a>
  423. <span class="sourceLineNo">415</span> if (lower &gt; 10.0) { //parameter value is &gt; 10<a name="line.415"></a>
  424. <span class="sourceLineNo">416</span> // The Math.log() function is based on e not 10.<a name="line.416"></a>
  425. <span class="sourceLineNo">417</span> logFloor = Math.log(lower) / LOG10_VALUE;<a name="line.417"></a>
  426. <span class="sourceLineNo">418</span> logFloor = Math.floor(logFloor);<a name="line.418"></a>
  427. <span class="sourceLineNo">419</span> logFloor = Math.pow(10, logFloor);<a name="line.419"></a>
  428. <span class="sourceLineNo">420</span> }<a name="line.420"></a>
  429. <span class="sourceLineNo">421</span> else if (lower &lt; -10.0) { //parameter value is &lt; -10<a name="line.421"></a>
  430. <span class="sourceLineNo">422</span> //calculate log using positive value:<a name="line.422"></a>
  431. <span class="sourceLineNo">423</span> logFloor = Math.log(-lower) / LOG10_VALUE;<a name="line.423"></a>
  432. <span class="sourceLineNo">424</span> //calculate floor using negative value:<a name="line.424"></a>
  433. <span class="sourceLineNo">425</span> logFloor = Math.floor(-logFloor);<a name="line.425"></a>
  434. <span class="sourceLineNo">426</span> //calculate power using positive value; then negate<a name="line.426"></a>
  435. <span class="sourceLineNo">427</span> logFloor = -Math.pow(10, -logFloor);<a name="line.427"></a>
  436. <span class="sourceLineNo">428</span> }<a name="line.428"></a>
  437. <span class="sourceLineNo">429</span> else {<a name="line.429"></a>
  438. <span class="sourceLineNo">430</span> //parameter value is -10 &gt; val &lt; 10<a name="line.430"></a>
  439. <span class="sourceLineNo">431</span> logFloor = Math.floor(lower); //use as-is<a name="line.431"></a>
  440. <span class="sourceLineNo">432</span> }<a name="line.432"></a>
  441. <span class="sourceLineNo">433</span> }<a name="line.433"></a>
  442. <span class="sourceLineNo">434</span> else {<a name="line.434"></a>
  443. <span class="sourceLineNo">435</span> //negative values not allowed<a name="line.435"></a>
  444. <span class="sourceLineNo">436</span> if (lower &gt; 0.0) { //parameter value is &gt; 0<a name="line.436"></a>
  445. <span class="sourceLineNo">437</span> // The Math.log() function is based on e not 10.<a name="line.437"></a>
  446. <span class="sourceLineNo">438</span> logFloor = Math.log(lower) / LOG10_VALUE;<a name="line.438"></a>
  447. <span class="sourceLineNo">439</span> logFloor = Math.floor(logFloor);<a name="line.439"></a>
  448. <span class="sourceLineNo">440</span> logFloor = Math.pow(10, logFloor);<a name="line.440"></a>
  449. <span class="sourceLineNo">441</span> }<a name="line.441"></a>
  450. <span class="sourceLineNo">442</span> else {<a name="line.442"></a>
  451. <span class="sourceLineNo">443</span> //parameter value is &lt;= 0<a name="line.443"></a>
  452. <span class="sourceLineNo">444</span> logFloor = Math.floor(lower); //use as-is<a name="line.444"></a>
  453. <span class="sourceLineNo">445</span> }<a name="line.445"></a>
  454. <span class="sourceLineNo">446</span> }<a name="line.446"></a>
  455. <span class="sourceLineNo">447</span> return logFloor;<a name="line.447"></a>
  456. <span class="sourceLineNo">448</span> }<a name="line.448"></a>
  457. <span class="sourceLineNo">449</span><a name="line.449"></a>
  458. <span class="sourceLineNo">450</span> /**<a name="line.450"></a>
  459. <span class="sourceLineNo">451</span> * Returns the smallest (closest to negative infinity) double value that is<a name="line.451"></a>
  460. <span class="sourceLineNo">452</span> * not less than the argument, is equal to a mathematical integer and<a name="line.452"></a>
  461. <span class="sourceLineNo">453</span> * satisfying the condition that log base 10 of the value is an integer<a name="line.453"></a>
  462. <span class="sourceLineNo">454</span> * (i.e., the value returned will be a power of 10: 1, 10, 100, 1000, etc.).<a name="line.454"></a>
  463. <span class="sourceLineNo">455</span> *<a name="line.455"></a>
  464. <span class="sourceLineNo">456</span> * @param upper a double value above which a ceiling will be calcualted.<a name="line.456"></a>
  465. <span class="sourceLineNo">457</span> *<a name="line.457"></a>
  466. <span class="sourceLineNo">458</span> * @return 10&lt;sup&gt;N&lt;/sup&gt; with N .. { 1 ... }<a name="line.458"></a>
  467. <span class="sourceLineNo">459</span> */<a name="line.459"></a>
  468. <span class="sourceLineNo">460</span> protected double computeLogCeil(double upper) {<a name="line.460"></a>
  469. <span class="sourceLineNo">461</span><a name="line.461"></a>
  470. <span class="sourceLineNo">462</span> double logCeil;<a name="line.462"></a>
  471. <span class="sourceLineNo">463</span> if (this.allowNegativesFlag) {<a name="line.463"></a>
  472. <span class="sourceLineNo">464</span> //negative values are allowed<a name="line.464"></a>
  473. <span class="sourceLineNo">465</span> if (upper &gt; 10.0) {<a name="line.465"></a>
  474. <span class="sourceLineNo">466</span> //parameter value is &gt; 10<a name="line.466"></a>
  475. <span class="sourceLineNo">467</span> // The Math.log() function is based on e not 10.<a name="line.467"></a>
  476. <span class="sourceLineNo">468</span> logCeil = Math.log(upper) / LOG10_VALUE;<a name="line.468"></a>
  477. <span class="sourceLineNo">469</span> logCeil = Math.ceil(logCeil);<a name="line.469"></a>
  478. <span class="sourceLineNo">470</span> logCeil = Math.pow(10, logCeil);<a name="line.470"></a>
  479. <span class="sourceLineNo">471</span> }<a name="line.471"></a>
  480. <span class="sourceLineNo">472</span> else if (upper &lt; -10.0) {<a name="line.472"></a>
  481. <span class="sourceLineNo">473</span> //parameter value is &lt; -10<a name="line.473"></a>
  482. <span class="sourceLineNo">474</span> //calculate log using positive value:<a name="line.474"></a>
  483. <span class="sourceLineNo">475</span> logCeil = Math.log(-upper) / LOG10_VALUE;<a name="line.475"></a>
  484. <span class="sourceLineNo">476</span> //calculate ceil using negative value:<a name="line.476"></a>
  485. <span class="sourceLineNo">477</span> logCeil = Math.ceil(-logCeil);<a name="line.477"></a>
  486. <span class="sourceLineNo">478</span> //calculate power using positive value; then negate<a name="line.478"></a>
  487. <span class="sourceLineNo">479</span> logCeil = -Math.pow(10, -logCeil);<a name="line.479"></a>
  488. <span class="sourceLineNo">480</span> }<a name="line.480"></a>
  489. <span class="sourceLineNo">481</span> else {<a name="line.481"></a>
  490. <span class="sourceLineNo">482</span> //parameter value is -10 &gt; val &lt; 10<a name="line.482"></a>
  491. <span class="sourceLineNo">483</span> logCeil = Math.ceil(upper); //use as-is<a name="line.483"></a>
  492. <span class="sourceLineNo">484</span> }<a name="line.484"></a>
  493. <span class="sourceLineNo">485</span> }<a name="line.485"></a>
  494. <span class="sourceLineNo">486</span> else {<a name="line.486"></a>
  495. <span class="sourceLineNo">487</span> //negative values not allowed<a name="line.487"></a>
  496. <span class="sourceLineNo">488</span> if (upper &gt; 0.0) {<a name="line.488"></a>
  497. <span class="sourceLineNo">489</span> //parameter value is &gt; 0<a name="line.489"></a>
  498. <span class="sourceLineNo">490</span> // The Math.log() function is based on e not 10.<a name="line.490"></a>
  499. <span class="sourceLineNo">491</span> logCeil = Math.log(upper) / LOG10_VALUE;<a name="line.491"></a>
  500. <span class="sourceLineNo">492</span> logCeil = Math.ceil(logCeil);<a name="line.492"></a>
  501. <span class="sourceLineNo">493</span> logCeil = Math.pow(10, logCeil);<a name="line.493"></a>
  502. <span class="sourceLineNo">494</span> }<a name="line.494"></a>
  503. <span class="sourceLineNo">495</span> else {<a name="line.495"></a>
  504. <span class="sourceLineNo">496</span> //parameter value is &lt;= 0<a name="line.496"></a>
  505. <span class="sourceLineNo">497</span> logCeil = Math.ceil(upper); //use as-is<a name="line.497"></a>
  506. <span class="sourceLineNo">498</span> }<a name="line.498"></a>
  507. <span class="sourceLineNo">499</span> }<a name="line.499"></a>
  508. <span class="sourceLineNo">500</span> return logCeil;<a name="line.500"></a>
  509. <span class="sourceLineNo">501</span> }<a name="line.501"></a>
  510. <span class="sourceLineNo">502</span><a name="line.502"></a>
  511. <span class="sourceLineNo">503</span> /**<a name="line.503"></a>
  512. <span class="sourceLineNo">504</span> * Rescales the axis to ensure that all data is visible.<a name="line.504"></a>
  513. <span class="sourceLineNo">505</span> */<a name="line.505"></a>
  514. <span class="sourceLineNo">506</span> @Override<a name="line.506"></a>
  515. <span class="sourceLineNo">507</span> public void autoAdjustRange() {<a name="line.507"></a>
  516. <span class="sourceLineNo">508</span><a name="line.508"></a>
  517. <span class="sourceLineNo">509</span> Plot plot = getPlot();<a name="line.509"></a>
  518. <span class="sourceLineNo">510</span> if (plot == null) {<a name="line.510"></a>
  519. <span class="sourceLineNo">511</span> return; // no plot, no data.<a name="line.511"></a>
  520. <span class="sourceLineNo">512</span> }<a name="line.512"></a>
  521. <span class="sourceLineNo">513</span><a name="line.513"></a>
  522. <span class="sourceLineNo">514</span> if (plot instanceof ValueAxisPlot) {<a name="line.514"></a>
  523. <span class="sourceLineNo">515</span> ValueAxisPlot vap = (ValueAxisPlot) plot;<a name="line.515"></a>
  524. <span class="sourceLineNo">516</span><a name="line.516"></a>
  525. <span class="sourceLineNo">517</span> double lower;<a name="line.517"></a>
  526. <span class="sourceLineNo">518</span> Range r = vap.getDataRange(this);<a name="line.518"></a>
  527. <span class="sourceLineNo">519</span> if (r == null) {<a name="line.519"></a>
  528. <span class="sourceLineNo">520</span> //no real data present<a name="line.520"></a>
  529. <span class="sourceLineNo">521</span> r = getDefaultAutoRange();<a name="line.521"></a>
  530. <span class="sourceLineNo">522</span> lower = r.getLowerBound(); //get lower bound value<a name="line.522"></a>
  531. <span class="sourceLineNo">523</span> }<a name="line.523"></a>
  532. <span class="sourceLineNo">524</span> else {<a name="line.524"></a>
  533. <span class="sourceLineNo">525</span> //actual data is present<a name="line.525"></a>
  534. <span class="sourceLineNo">526</span> lower = r.getLowerBound(); //get lower bound value<a name="line.526"></a>
  535. <span class="sourceLineNo">527</span> if (this.strictValuesFlag<a name="line.527"></a>
  536. <span class="sourceLineNo">528</span> &amp;&amp; !this.allowNegativesFlag &amp;&amp; lower &lt;= 0.0) {<a name="line.528"></a>
  537. <span class="sourceLineNo">529</span> //strict flag set, allow-negatives not set and values &lt;= 0<a name="line.529"></a>
  538. <span class="sourceLineNo">530</span> throw new RuntimeException("Values less than or equal to "<a name="line.530"></a>
  539. <span class="sourceLineNo">531</span> + "zero not allowed with logarithmic axis");<a name="line.531"></a>
  540. <span class="sourceLineNo">532</span> }<a name="line.532"></a>
  541. <span class="sourceLineNo">533</span> }<a name="line.533"></a>
  542. <span class="sourceLineNo">534</span><a name="line.534"></a>
  543. <span class="sourceLineNo">535</span> //apply lower margin by decreasing lower bound:<a name="line.535"></a>
  544. <span class="sourceLineNo">536</span> final double lowerMargin;<a name="line.536"></a>
  545. <span class="sourceLineNo">537</span> if (lower &gt; 0.0 &amp;&amp; (lowerMargin = getLowerMargin()) &gt; 0.0) {<a name="line.537"></a>
  546. <span class="sourceLineNo">538</span> //lower bound and margin OK; get log10 of lower bound<a name="line.538"></a>
  547. <span class="sourceLineNo">539</span> final double logLower = (Math.log(lower) / LOG10_VALUE);<a name="line.539"></a>
  548. <span class="sourceLineNo">540</span> double logAbs; //get absolute value of log10 value<a name="line.540"></a>
  549. <span class="sourceLineNo">541</span> if ((logAbs = Math.abs(logLower)) &lt; 1.0) {<a name="line.541"></a>
  550. <span class="sourceLineNo">542</span> logAbs = 1.0; //if less than 1.0 then make it 1.0<a name="line.542"></a>
  551. <span class="sourceLineNo">543</span> } //subtract out margin and get exponential value:<a name="line.543"></a>
  552. <span class="sourceLineNo">544</span> lower = Math.pow(10, (logLower - (logAbs * lowerMargin)));<a name="line.544"></a>
  553. <span class="sourceLineNo">545</span> }<a name="line.545"></a>
  554. <span class="sourceLineNo">546</span><a name="line.546"></a>
  555. <span class="sourceLineNo">547</span> //if flag then change to log version of lowest value<a name="line.547"></a>
  556. <span class="sourceLineNo">548</span> // to make range begin at a 10^n value:<a name="line.548"></a>
  557. <span class="sourceLineNo">549</span> if (this.autoRangeNextLogFlag) {<a name="line.549"></a>
  558. <span class="sourceLineNo">550</span> lower = computeLogFloor(lower);<a name="line.550"></a>
  559. <span class="sourceLineNo">551</span> }<a name="line.551"></a>
  560. <span class="sourceLineNo">552</span><a name="line.552"></a>
  561. <span class="sourceLineNo">553</span> if (!this.allowNegativesFlag &amp;&amp; lower &gt;= 0.0<a name="line.553"></a>
  562. <span class="sourceLineNo">554</span> &amp;&amp; lower &lt; SMALL_LOG_VALUE) {<a name="line.554"></a>
  563. <span class="sourceLineNo">555</span> //negatives not allowed and lower range bound is zero<a name="line.555"></a>
  564. <span class="sourceLineNo">556</span> lower = r.getLowerBound(); //use data range bound instead<a name="line.556"></a>
  565. <span class="sourceLineNo">557</span> }<a name="line.557"></a>
  566. <span class="sourceLineNo">558</span><a name="line.558"></a>
  567. <span class="sourceLineNo">559</span> double upper = r.getUpperBound();<a name="line.559"></a>
  568. <span class="sourceLineNo">560</span><a name="line.560"></a>
  569. <span class="sourceLineNo">561</span> //apply upper margin by increasing upper bound:<a name="line.561"></a>
  570. <span class="sourceLineNo">562</span> final double upperMargin;<a name="line.562"></a>
  571. <span class="sourceLineNo">563</span> if (upper &gt; 0.0 &amp;&amp; (upperMargin = getUpperMargin()) &gt; 0.0) {<a name="line.563"></a>
  572. <span class="sourceLineNo">564</span> //upper bound and margin OK; get log10 of upper bound<a name="line.564"></a>
  573. <span class="sourceLineNo">565</span> final double logUpper = (Math.log(upper) / LOG10_VALUE);<a name="line.565"></a>
  574. <span class="sourceLineNo">566</span> double logAbs; //get absolute value of log10 value<a name="line.566"></a>
  575. <span class="sourceLineNo">567</span> if ((logAbs = Math.abs(logUpper)) &lt; 1.0) {<a name="line.567"></a>
  576. <span class="sourceLineNo">568</span> logAbs = 1.0; //if less than 1.0 then make it 1.0<a name="line.568"></a>
  577. <span class="sourceLineNo">569</span> } //add in margin and get exponential value:<a name="line.569"></a>
  578. <span class="sourceLineNo">570</span> upper = Math.pow(10, (logUpper + (logAbs * upperMargin)));<a name="line.570"></a>
  579. <span class="sourceLineNo">571</span> }<a name="line.571"></a>
  580. <span class="sourceLineNo">572</span><a name="line.572"></a>
  581. <span class="sourceLineNo">573</span> if (!this.allowNegativesFlag &amp;&amp; upper &lt; 1.0 &amp;&amp; upper &gt; 0.0<a name="line.573"></a>
  582. <span class="sourceLineNo">574</span> &amp;&amp; lower &gt; 0.0) {<a name="line.574"></a>
  583. <span class="sourceLineNo">575</span> //negatives not allowed and upper bound between 0 &amp; 1<a name="line.575"></a>
  584. <span class="sourceLineNo">576</span> //round up to nearest significant digit for bound:<a name="line.576"></a>
  585. <span class="sourceLineNo">577</span> //get negative exponent:<a name="line.577"></a>
  586. <span class="sourceLineNo">578</span> double expVal = Math.log(upper) / LOG10_VALUE;<a name="line.578"></a>
  587. <span class="sourceLineNo">579</span> expVal = Math.ceil(-expVal + 0.001); //get positive exponent<a name="line.579"></a>
  588. <span class="sourceLineNo">580</span> expVal = Math.pow(10, expVal); //create multiplier value<a name="line.580"></a>
  589. <span class="sourceLineNo">581</span> //multiply, round up, and divide for bound value:<a name="line.581"></a>
  590. <span class="sourceLineNo">582</span> upper = (expVal &gt; 0.0) ? Math.ceil(upper * expVal) / expVal<a name="line.582"></a>
  591. <span class="sourceLineNo">583</span> : Math.ceil(upper);<a name="line.583"></a>
  592. <span class="sourceLineNo">584</span> }<a name="line.584"></a>
  593. <span class="sourceLineNo">585</span> else {<a name="line.585"></a>
  594. <span class="sourceLineNo">586</span> //negatives allowed or upper bound not between 0 &amp; 1<a name="line.586"></a>
  595. <span class="sourceLineNo">587</span> //if flag then change to log version of highest value to<a name="line.587"></a>
  596. <span class="sourceLineNo">588</span> // make range begin at a 10^n value; else use nearest int<a name="line.588"></a>
  597. <span class="sourceLineNo">589</span> upper = (this.autoRangeNextLogFlag) ? computeLogCeil(upper)<a name="line.589"></a>
  598. <span class="sourceLineNo">590</span> : Math.ceil(upper);<a name="line.590"></a>
  599. <span class="sourceLineNo">591</span> }<a name="line.591"></a>
  600. <span class="sourceLineNo">592</span> // ensure the autorange is at least &lt;minRange&gt; in size...<a name="line.592"></a>
  601. <span class="sourceLineNo">593</span> double minRange = getAutoRangeMinimumSize();<a name="line.593"></a>
  602. <span class="sourceLineNo">594</span> if (upper - lower &lt; minRange) {<a name="line.594"></a>
  603. <span class="sourceLineNo">595</span> upper = (upper + lower + minRange) / 2;<a name="line.595"></a>
  604. <span class="sourceLineNo">596</span> lower = (upper + lower - minRange) / 2;<a name="line.596"></a>
  605. <span class="sourceLineNo">597</span> //if autorange still below minimum then adjust by 1%<a name="line.597"></a>
  606. <span class="sourceLineNo">598</span> // (can be needed when minRange is very small):<a name="line.598"></a>
  607. <span class="sourceLineNo">599</span> if (upper - lower &lt; minRange) {<a name="line.599"></a>
  608. <span class="sourceLineNo">600</span> double absUpper = Math.abs(upper);<a name="line.600"></a>
  609. <span class="sourceLineNo">601</span> //need to account for case where upper==0.0<a name="line.601"></a>
  610. <span class="sourceLineNo">602</span> double adjVal = (absUpper &gt; SMALL_LOG_VALUE) ? absUpper<a name="line.602"></a>
  611. <span class="sourceLineNo">603</span> / 100.0 : 0.01;<a name="line.603"></a>
  612. <span class="sourceLineNo">604</span> upper = (upper + lower + adjVal) / 2;<a name="line.604"></a>
  613. <span class="sourceLineNo">605</span> lower = (upper + lower - adjVal) / 2;<a name="line.605"></a>
  614. <span class="sourceLineNo">606</span> }<a name="line.606"></a>
  615. <span class="sourceLineNo">607</span> }<a name="line.607"></a>
  616. <span class="sourceLineNo">608</span><a name="line.608"></a>
  617. <span class="sourceLineNo">609</span> setRange(new Range(lower, upper), false, false);<a name="line.609"></a>
  618. <span class="sourceLineNo">610</span> setupSmallLogFlag(); //setup flag based on bounds values<a name="line.610"></a>
  619. <span class="sourceLineNo">611</span> }<a name="line.611"></a>
  620. <span class="sourceLineNo">612</span> }<a name="line.612"></a>
  621. <span class="sourceLineNo">613</span><a name="line.613"></a>
  622. <span class="sourceLineNo">614</span> /**<a name="line.614"></a>
  623. <span class="sourceLineNo">615</span> * Converts a data value to a coordinate in Java2D space, assuming that<a name="line.615"></a>
  624. <span class="sourceLineNo">616</span> * the axis runs along one edge of the specified plotArea.<a name="line.616"></a>
  625. <span class="sourceLineNo">617</span> * Note that it is possible for the coordinate to fall outside the<a name="line.617"></a>
  626. <span class="sourceLineNo">618</span> * plotArea.<a name="line.618"></a>
  627. <span class="sourceLineNo">619</span> *<a name="line.619"></a>
  628. <span class="sourceLineNo">620</span> * @param value the data value.<a name="line.620"></a>
  629. <span class="sourceLineNo">621</span> * @param plotArea the area for plotting the data.<a name="line.621"></a>
  630. <span class="sourceLineNo">622</span> * @param edge the axis location.<a name="line.622"></a>
  631. <span class="sourceLineNo">623</span> *<a name="line.623"></a>
  632. <span class="sourceLineNo">624</span> * @return The Java2D coordinate.<a name="line.624"></a>
  633. <span class="sourceLineNo">625</span> */<a name="line.625"></a>
  634. <span class="sourceLineNo">626</span> @Override<a name="line.626"></a>
  635. <span class="sourceLineNo">627</span> public double valueToJava2D(double value, Rectangle2D plotArea,<a name="line.627"></a>
  636. <span class="sourceLineNo">628</span> RectangleEdge edge) {<a name="line.628"></a>
  637. <span class="sourceLineNo">629</span><a name="line.629"></a>
  638. <span class="sourceLineNo">630</span> Range range = getRange();<a name="line.630"></a>
  639. <span class="sourceLineNo">631</span> double axisMin = switchedLog10(range.getLowerBound());<a name="line.631"></a>
  640. <span class="sourceLineNo">632</span> double axisMax = switchedLog10(range.getUpperBound());<a name="line.632"></a>
  641. <span class="sourceLineNo">633</span><a name="line.633"></a>
  642. <span class="sourceLineNo">634</span> double min = 0.0;<a name="line.634"></a>
  643. <span class="sourceLineNo">635</span> double max = 0.0;<a name="line.635"></a>
  644. <span class="sourceLineNo">636</span> if (RectangleEdge.isTopOrBottom(edge)) {<a name="line.636"></a>
  645. <span class="sourceLineNo">637</span> min = plotArea.getMinX();<a name="line.637"></a>
  646. <span class="sourceLineNo">638</span> max = plotArea.getMaxX();<a name="line.638"></a>
  647. <span class="sourceLineNo">639</span> }<a name="line.639"></a>
  648. <span class="sourceLineNo">640</span> else if (RectangleEdge.isLeftOrRight(edge)) {<a name="line.640"></a>
  649. <span class="sourceLineNo">641</span> min = plotArea.getMaxY();<a name="line.641"></a>
  650. <span class="sourceLineNo">642</span> max = plotArea.getMinY();<a name="line.642"></a>
  651. <span class="sourceLineNo">643</span> }<a name="line.643"></a>
  652. <span class="sourceLineNo">644</span><a name="line.644"></a>
  653. <span class="sourceLineNo">645</span> value = switchedLog10(value);<a name="line.645"></a>
  654. <span class="sourceLineNo">646</span><a name="line.646"></a>
  655. <span class="sourceLineNo">647</span> if (isInverted()) {<a name="line.647"></a>
  656. <span class="sourceLineNo">648</span> return max - (((value - axisMin) / (axisMax - axisMin))<a name="line.648"></a>
  657. <span class="sourceLineNo">649</span> * (max - min));<a name="line.649"></a>
  658. <span class="sourceLineNo">650</span> }<a name="line.650"></a>
  659. <span class="sourceLineNo">651</span> else {<a name="line.651"></a>
  660. <span class="sourceLineNo">652</span> return min + (((value - axisMin) / (axisMax - axisMin))<a name="line.652"></a>
  661. <span class="sourceLineNo">653</span> * (max - min));<a name="line.653"></a>
  662. <span class="sourceLineNo">654</span> }<a name="line.654"></a>
  663. <span class="sourceLineNo">655</span><a name="line.655"></a>
  664. <span class="sourceLineNo">656</span> }<a name="line.656"></a>
  665. <span class="sourceLineNo">657</span><a name="line.657"></a>
  666. <span class="sourceLineNo">658</span> /**<a name="line.658"></a>
  667. <span class="sourceLineNo">659</span> * Converts a coordinate in Java2D space to the corresponding data<a name="line.659"></a>
  668. <span class="sourceLineNo">660</span> * value, assuming that the axis runs along one edge of the specified<a name="line.660"></a>
  669. <span class="sourceLineNo">661</span> * plotArea.<a name="line.661"></a>
  670. <span class="sourceLineNo">662</span> *<a name="line.662"></a>
  671. <span class="sourceLineNo">663</span> * @param java2DValue the coordinate in Java2D space.<a name="line.663"></a>
  672. <span class="sourceLineNo">664</span> * @param plotArea the area in which the data is plotted.<a name="line.664"></a>
  673. <span class="sourceLineNo">665</span> * @param edge the axis location.<a name="line.665"></a>
  674. <span class="sourceLineNo">666</span> *<a name="line.666"></a>
  675. <span class="sourceLineNo">667</span> * @return The data value.<a name="line.667"></a>
  676. <span class="sourceLineNo">668</span> */<a name="line.668"></a>
  677. <span class="sourceLineNo">669</span> @Override<a name="line.669"></a>
  678. <span class="sourceLineNo">670</span> public double java2DToValue(double java2DValue, Rectangle2D plotArea,<a name="line.670"></a>
  679. <span class="sourceLineNo">671</span> RectangleEdge edge) {<a name="line.671"></a>
  680. <span class="sourceLineNo">672</span><a name="line.672"></a>
  681. <span class="sourceLineNo">673</span> Range range = getRange();<a name="line.673"></a>
  682. <span class="sourceLineNo">674</span> double axisMin = switchedLog10(range.getLowerBound());<a name="line.674"></a>
  683. <span class="sourceLineNo">675</span> double axisMax = switchedLog10(range.getUpperBound());<a name="line.675"></a>
  684. <span class="sourceLineNo">676</span><a name="line.676"></a>
  685. <span class="sourceLineNo">677</span> double plotMin = 0.0;<a name="line.677"></a>
  686. <span class="sourceLineNo">678</span> double plotMax = 0.0;<a name="line.678"></a>
  687. <span class="sourceLineNo">679</span> if (RectangleEdge.isTopOrBottom(edge)) {<a name="line.679"></a>
  688. <span class="sourceLineNo">680</span> plotMin = plotArea.getX();<a name="line.680"></a>
  689. <span class="sourceLineNo">681</span> plotMax = plotArea.getMaxX();<a name="line.681"></a>
  690. <span class="sourceLineNo">682</span> }<a name="line.682"></a>
  691. <span class="sourceLineNo">683</span> else if (RectangleEdge.isLeftOrRight(edge)) {<a name="line.683"></a>
  692. <span class="sourceLineNo">684</span> plotMin = plotArea.getMaxY();<a name="line.684"></a>
  693. <span class="sourceLineNo">685</span> plotMax = plotArea.getMinY();<a name="line.685"></a>
  694. <span class="sourceLineNo">686</span> }<a name="line.686"></a>
  695. <span class="sourceLineNo">687</span><a name="line.687"></a>
  696. <span class="sourceLineNo">688</span> if (isInverted()) {<a name="line.688"></a>
  697. <span class="sourceLineNo">689</span> return switchedPow10(axisMax - ((java2DValue - plotMin)<a name="line.689"></a>
  698. <span class="sourceLineNo">690</span> / (plotMax - plotMin)) * (axisMax - axisMin));<a name="line.690"></a>
  699. <span class="sourceLineNo">691</span> }<a name="line.691"></a>
  700. <span class="sourceLineNo">692</span> else {<a name="line.692"></a>
  701. <span class="sourceLineNo">693</span> return switchedPow10(axisMin + ((java2DValue - plotMin)<a name="line.693"></a>
  702. <span class="sourceLineNo">694</span> / (plotMax - plotMin)) * (axisMax - axisMin));<a name="line.694"></a>
  703. <span class="sourceLineNo">695</span> }<a name="line.695"></a>
  704. <span class="sourceLineNo">696</span> }<a name="line.696"></a>
  705. <span class="sourceLineNo">697</span><a name="line.697"></a>
  706. <span class="sourceLineNo">698</span> /**<a name="line.698"></a>
  707. <span class="sourceLineNo">699</span> * Zooms in on the current range.<a name="line.699"></a>
  708. <span class="sourceLineNo">700</span> *<a name="line.700"></a>
  709. <span class="sourceLineNo">701</span> * @param lowerPercent the new lower bound.<a name="line.701"></a>
  710. <span class="sourceLineNo">702</span> * @param upperPercent the new upper bound.<a name="line.702"></a>
  711. <span class="sourceLineNo">703</span> */<a name="line.703"></a>
  712. <span class="sourceLineNo">704</span> @Override<a name="line.704"></a>
  713. <span class="sourceLineNo">705</span> public void zoomRange(double lowerPercent, double upperPercent) {<a name="line.705"></a>
  714. <span class="sourceLineNo">706</span> double startLog = switchedLog10(getRange().getLowerBound());<a name="line.706"></a>
  715. <span class="sourceLineNo">707</span> double lengthLog = switchedLog10(getRange().getUpperBound()) - startLog;<a name="line.707"></a>
  716. <span class="sourceLineNo">708</span> Range adjusted;<a name="line.708"></a>
  717. <span class="sourceLineNo">709</span><a name="line.709"></a>
  718. <span class="sourceLineNo">710</span> if (isInverted()) {<a name="line.710"></a>
  719. <span class="sourceLineNo">711</span> adjusted = new Range(<a name="line.711"></a>
  720. <span class="sourceLineNo">712</span> switchedPow10(startLog + (lengthLog * (1 - upperPercent))),<a name="line.712"></a>
  721. <span class="sourceLineNo">713</span> switchedPow10(startLog + (lengthLog * (1 - lowerPercent))));<a name="line.713"></a>
  722. <span class="sourceLineNo">714</span> }<a name="line.714"></a>
  723. <span class="sourceLineNo">715</span> else {<a name="line.715"></a>
  724. <span class="sourceLineNo">716</span> adjusted = new Range(<a name="line.716"></a>
  725. <span class="sourceLineNo">717</span> switchedPow10(startLog + (lengthLog * lowerPercent)),<a name="line.717"></a>
  726. <span class="sourceLineNo">718</span> switchedPow10(startLog + (lengthLog * upperPercent)));<a name="line.718"></a>
  727. <span class="sourceLineNo">719</span> }<a name="line.719"></a>
  728. <span class="sourceLineNo">720</span><a name="line.720"></a>
  729. <span class="sourceLineNo">721</span> setRange(adjusted);<a name="line.721"></a>
  730. <span class="sourceLineNo">722</span> }<a name="line.722"></a>
  731. <span class="sourceLineNo">723</span><a name="line.723"></a>
  732. <span class="sourceLineNo">724</span> /**<a name="line.724"></a>
  733. <span class="sourceLineNo">725</span> * Calculates the positions of the tick labels for the axis, storing the<a name="line.725"></a>
  734. <span class="sourceLineNo">726</span> * results in the tick label list (ready for drawing).<a name="line.726"></a>
  735. <span class="sourceLineNo">727</span> *<a name="line.727"></a>
  736. <span class="sourceLineNo">728</span> * @param g2 the graphics device.<a name="line.728"></a>
  737. <span class="sourceLineNo">729</span> * @param dataArea the area in which the plot should be drawn.<a name="line.729"></a>
  738. <span class="sourceLineNo">730</span> * @param edge the location of the axis.<a name="line.730"></a>
  739. <span class="sourceLineNo">731</span> *<a name="line.731"></a>
  740. <span class="sourceLineNo">732</span> * @return A list of ticks.<a name="line.732"></a>
  741. <span class="sourceLineNo">733</span> */<a name="line.733"></a>
  742. <span class="sourceLineNo">734</span> @Override<a name="line.734"></a>
  743. <span class="sourceLineNo">735</span> protected List refreshTicksHorizontal(Graphics2D g2, Rectangle2D dataArea,<a name="line.735"></a>
  744. <span class="sourceLineNo">736</span> RectangleEdge edge) {<a name="line.736"></a>
  745. <span class="sourceLineNo">737</span><a name="line.737"></a>
  746. <span class="sourceLineNo">738</span> List ticks = new java.util.ArrayList();<a name="line.738"></a>
  747. <span class="sourceLineNo">739</span> Range range = getRange();<a name="line.739"></a>
  748. <span class="sourceLineNo">740</span><a name="line.740"></a>
  749. <span class="sourceLineNo">741</span> //get lower bound value:<a name="line.741"></a>
  750. <span class="sourceLineNo">742</span> double lowerBoundVal = range.getLowerBound();<a name="line.742"></a>
  751. <span class="sourceLineNo">743</span> //if small log values and lower bound value too small<a name="line.743"></a>
  752. <span class="sourceLineNo">744</span> // then set to a small value (don't allow &lt;= 0):<a name="line.744"></a>
  753. <span class="sourceLineNo">745</span> if (this.smallLogFlag &amp;&amp; lowerBoundVal &lt; SMALL_LOG_VALUE) {<a name="line.745"></a>
  754. <span class="sourceLineNo">746</span> lowerBoundVal = SMALL_LOG_VALUE;<a name="line.746"></a>
  755. <span class="sourceLineNo">747</span> }<a name="line.747"></a>
  756. <span class="sourceLineNo">748</span><a name="line.748"></a>
  757. <span class="sourceLineNo">749</span> //get upper bound value<a name="line.749"></a>
  758. <span class="sourceLineNo">750</span> double upperBoundVal = range.getUpperBound();<a name="line.750"></a>
  759. <span class="sourceLineNo">751</span><a name="line.751"></a>
  760. <span class="sourceLineNo">752</span> //get log10 version of lower bound and round to integer:<a name="line.752"></a>
  761. <span class="sourceLineNo">753</span> int iBegCount = (int) Math.rint(switchedLog10(lowerBoundVal));<a name="line.753"></a>
  762. <span class="sourceLineNo">754</span> //get log10 version of upper bound and round to integer:<a name="line.754"></a>
  763. <span class="sourceLineNo">755</span> int iEndCount = (int) Math.rint(switchedLog10(upperBoundVal));<a name="line.755"></a>
  764. <span class="sourceLineNo">756</span><a name="line.756"></a>
  765. <span class="sourceLineNo">757</span> if (iBegCount == iEndCount &amp;&amp; iBegCount &gt; 0<a name="line.757"></a>
  766. <span class="sourceLineNo">758</span> &amp;&amp; Math.pow(10, iBegCount) &gt; lowerBoundVal) {<a name="line.758"></a>
  767. <span class="sourceLineNo">759</span> //only 1 power of 10 value, it's &gt; 0 and its resulting<a name="line.759"></a>
  768. <span class="sourceLineNo">760</span> // tick value will be larger than lower bound of data<a name="line.760"></a>
  769. <span class="sourceLineNo">761</span> --iBegCount; //decrement to generate more ticks<a name="line.761"></a>
  770. <span class="sourceLineNo">762</span> }<a name="line.762"></a>
  771. <span class="sourceLineNo">763</span><a name="line.763"></a>
  772. <span class="sourceLineNo">764</span> double currentTickValue;<a name="line.764"></a>
  773. <span class="sourceLineNo">765</span> String tickLabel;<a name="line.765"></a>
  774. <span class="sourceLineNo">766</span> boolean zeroTickFlag = false;<a name="line.766"></a>
  775. <span class="sourceLineNo">767</span> for (int i = iBegCount; i &lt;= iEndCount; i++) {<a name="line.767"></a>
  776. <span class="sourceLineNo">768</span> //for each power of 10 value; create ten ticks<a name="line.768"></a>
  777. <span class="sourceLineNo">769</span> for (int j = 0; j &lt; 10; ++j) {<a name="line.769"></a>
  778. <span class="sourceLineNo">770</span> //for each tick to be displayed<a name="line.770"></a>
  779. <span class="sourceLineNo">771</span> if (this.smallLogFlag) {<a name="line.771"></a>
  780. <span class="sourceLineNo">772</span> //small log values in use; create numeric value for tick<a name="line.772"></a>
  781. <span class="sourceLineNo">773</span> currentTickValue = Math.pow(10, i) + (Math.pow(10, i) * j);<a name="line.773"></a>
  782. <span class="sourceLineNo">774</span> if (this.expTickLabelsFlag<a name="line.774"></a>
  783. <span class="sourceLineNo">775</span> || (i &lt; 0 &amp;&amp; currentTickValue &gt; 0.0<a name="line.775"></a>
  784. <span class="sourceLineNo">776</span> &amp;&amp; currentTickValue &lt; 1.0)) {<a name="line.776"></a>
  785. <span class="sourceLineNo">777</span> //showing "1e#"-style ticks or negative exponent<a name="line.777"></a>
  786. <span class="sourceLineNo">778</span> // generating tick value between 0 &amp; 1; show fewer<a name="line.778"></a>
  787. <span class="sourceLineNo">779</span> if (j == 0 || (i &gt; -4 &amp;&amp; j &lt; 2)<a name="line.779"></a>
  788. <span class="sourceLineNo">780</span> || currentTickValue &gt;= upperBoundVal) {<a name="line.780"></a>
  789. <span class="sourceLineNo">781</span> //first tick of series, or not too small a value and<a name="line.781"></a>
  790. <span class="sourceLineNo">782</span> // one of first 3 ticks, or last tick to be displayed<a name="line.782"></a>
  791. <span class="sourceLineNo">783</span> // set exact number of fractional digits to be shown<a name="line.783"></a>
  792. <span class="sourceLineNo">784</span> // (no effect if showing "1e#"-style ticks):<a name="line.784"></a>
  793. <span class="sourceLineNo">785</span> this.numberFormatterObj<a name="line.785"></a>
  794. <span class="sourceLineNo">786</span> .setMaximumFractionDigits(-i);<a name="line.786"></a>
  795. <span class="sourceLineNo">787</span> //create tick label (force use of fmt obj):<a name="line.787"></a>
  796. <span class="sourceLineNo">788</span> tickLabel = makeTickLabel(currentTickValue, true);<a name="line.788"></a>
  797. <span class="sourceLineNo">789</span> }<a name="line.789"></a>
  798. <span class="sourceLineNo">790</span> else { //no tick label to be shown<a name="line.790"></a>
  799. <span class="sourceLineNo">791</span> tickLabel = "";<a name="line.791"></a>
  800. <span class="sourceLineNo">792</span> }<a name="line.792"></a>
  801. <span class="sourceLineNo">793</span> }<a name="line.793"></a>
  802. <span class="sourceLineNo">794</span> else { //tick value not between 0 &amp; 1<a name="line.794"></a>
  803. <span class="sourceLineNo">795</span> //show tick label if it's the first or last in<a name="line.795"></a>
  804. <span class="sourceLineNo">796</span> // the set, or if it's 1-5; beyond that show<a name="line.796"></a>
  805. <span class="sourceLineNo">797</span> // fewer as the values get larger:<a name="line.797"></a>
  806. <span class="sourceLineNo">798</span> tickLabel = (j &lt; 1 || (i &lt; 1 &amp;&amp; j &lt; 5) || (j &lt; 4 - i)<a name="line.798"></a>
  807. <span class="sourceLineNo">799</span> || currentTickValue &gt;= upperBoundVal)<a name="line.799"></a>
  808. <span class="sourceLineNo">800</span> ? makeTickLabel(currentTickValue) : "";<a name="line.800"></a>
  809. <span class="sourceLineNo">801</span> }<a name="line.801"></a>
  810. <span class="sourceLineNo">802</span> }<a name="line.802"></a>
  811. <span class="sourceLineNo">803</span> else { //not small log values in use; allow for values &lt;= 0<a name="line.803"></a>
  812. <span class="sourceLineNo">804</span> if (zeroTickFlag) { //if did zero tick last iter then<a name="line.804"></a>
  813. <span class="sourceLineNo">805</span> --j; //decrement to do 1.0 tick now<a name="line.805"></a>
  814. <span class="sourceLineNo">806</span> } //calculate power-of-ten value for tick:<a name="line.806"></a>
  815. <span class="sourceLineNo">807</span> currentTickValue = (i &gt;= 0)<a name="line.807"></a>
  816. <span class="sourceLineNo">808</span> ? Math.pow(10, i) + (Math.pow(10, i) * j)<a name="line.808"></a>
  817. <span class="sourceLineNo">809</span> : -(Math.pow(10, -i) - (Math.pow(10, -i - 1) * j));<a name="line.809"></a>
  818. <span class="sourceLineNo">810</span> if (!zeroTickFlag) { // did not do zero tick last iteration<a name="line.810"></a>
  819. <span class="sourceLineNo">811</span> if (Math.abs(currentTickValue - 1.0) &lt; 0.0001<a name="line.811"></a>
  820. <span class="sourceLineNo">812</span> &amp;&amp; lowerBoundVal &lt;= 0.0 &amp;&amp; upperBoundVal &gt;= 0.0) {<a name="line.812"></a>
  821. <span class="sourceLineNo">813</span> //tick value is 1.0 and 0.0 is within data range<a name="line.813"></a>
  822. <span class="sourceLineNo">814</span> currentTickValue = 0.0; //set tick value to zero<a name="line.814"></a>
  823. <span class="sourceLineNo">815</span> zeroTickFlag = true; //indicate zero tick<a name="line.815"></a>
  824. <span class="sourceLineNo">816</span> }<a name="line.816"></a>
  825. <span class="sourceLineNo">817</span> }<a name="line.817"></a>
  826. <span class="sourceLineNo">818</span> else { //did zero tick last iteration<a name="line.818"></a>
  827. <span class="sourceLineNo">819</span> zeroTickFlag = false; //clear flag<a name="line.819"></a>
  828. <span class="sourceLineNo">820</span> } //create tick label string:<a name="line.820"></a>
  829. <span class="sourceLineNo">821</span> //show tick label if "1e#"-style and it's one<a name="line.821"></a>
  830. <span class="sourceLineNo">822</span> // of the first two, if it's the first or last<a name="line.822"></a>
  831. <span class="sourceLineNo">823</span> // in the set, or if it's 1-5; beyond that<a name="line.823"></a>
  832. <span class="sourceLineNo">824</span> // show fewer as the values get larger:<a name="line.824"></a>
  833. <span class="sourceLineNo">825</span> tickLabel = ((this.expTickLabelsFlag &amp;&amp; j &lt; 2)<a name="line.825"></a>
  834. <span class="sourceLineNo">826</span> || j &lt; 1<a name="line.826"></a>
  835. <span class="sourceLineNo">827</span> || (i &lt; 1 &amp;&amp; j &lt; 5) || (j &lt; 4 - i)<a name="line.827"></a>
  836. <span class="sourceLineNo">828</span> || currentTickValue &gt;= upperBoundVal)<a name="line.828"></a>
  837. <span class="sourceLineNo">829</span> ? makeTickLabel(currentTickValue) : "";<a name="line.829"></a>
  838. <span class="sourceLineNo">830</span> }<a name="line.830"></a>
  839. <span class="sourceLineNo">831</span><a name="line.831"></a>
  840. <span class="sourceLineNo">832</span> if (currentTickValue &gt; upperBoundVal) {<a name="line.832"></a>
  841. <span class="sourceLineNo">833</span> return ticks; // if past highest data value then exit<a name="line.833"></a>
  842. <span class="sourceLineNo">834</span> // method<a name="line.834"></a>
  843. <span class="sourceLineNo">835</span> }<a name="line.835"></a>
  844. <span class="sourceLineNo">836</span><a name="line.836"></a>
  845. <span class="sourceLineNo">837</span> if (currentTickValue &gt;= lowerBoundVal - SMALL_LOG_VALUE) {<a name="line.837"></a>
  846. <span class="sourceLineNo">838</span> //tick value not below lowest data value<a name="line.838"></a>
  847. <span class="sourceLineNo">839</span> TextAnchor anchor;<a name="line.839"></a>
  848. <span class="sourceLineNo">840</span> TextAnchor rotationAnchor;<a name="line.840"></a>
  849. <span class="sourceLineNo">841</span> double angle = 0.0;<a name="line.841"></a>
  850. <span class="sourceLineNo">842</span> if (isVerticalTickLabels()) {<a name="line.842"></a>
  851. <span class="sourceLineNo">843</span> anchor = TextAnchor.CENTER_RIGHT;<a name="line.843"></a>
  852. <span class="sourceLineNo">844</span> rotationAnchor = TextAnchor.CENTER_RIGHT;<a name="line.844"></a>
  853. <span class="sourceLineNo">845</span> if (edge == RectangleEdge.TOP) {<a name="line.845"></a>
  854. <span class="sourceLineNo">846</span> angle = Math.PI / 2.0;<a name="line.846"></a>
  855. <span class="sourceLineNo">847</span> }<a name="line.847"></a>
  856. <span class="sourceLineNo">848</span> else {<a name="line.848"></a>
  857. <span class="sourceLineNo">849</span> angle = -Math.PI / 2.0;<a name="line.849"></a>
  858. <span class="sourceLineNo">850</span> }<a name="line.850"></a>
  859. <span class="sourceLineNo">851</span> }<a name="line.851"></a>
  860. <span class="sourceLineNo">852</span> else {<a name="line.852"></a>
  861. <span class="sourceLineNo">853</span> if (edge == RectangleEdge.TOP) {<a name="line.853"></a>
  862. <span class="sourceLineNo">854</span> anchor = TextAnchor.BOTTOM_CENTER;<a name="line.854"></a>
  863. <span class="sourceLineNo">855</span> rotationAnchor = TextAnchor.BOTTOM_CENTER;<a name="line.855"></a>
  864. <span class="sourceLineNo">856</span> }<a name="line.856"></a>
  865. <span class="sourceLineNo">857</span> else {<a name="line.857"></a>
  866. <span class="sourceLineNo">858</span> anchor = TextAnchor.TOP_CENTER;<a name="line.858"></a>
  867. <span class="sourceLineNo">859</span> rotationAnchor = TextAnchor.TOP_CENTER;<a name="line.859"></a>
  868. <span class="sourceLineNo">860</span> }<a name="line.860"></a>
  869. <span class="sourceLineNo">861</span> }<a name="line.861"></a>
  870. <span class="sourceLineNo">862</span><a name="line.862"></a>
  871. <span class="sourceLineNo">863</span> Tick tick = new NumberTick(new Double(currentTickValue),<a name="line.863"></a>
  872. <span class="sourceLineNo">864</span> tickLabel, anchor, rotationAnchor, angle);<a name="line.864"></a>
  873. <span class="sourceLineNo">865</span> ticks.add(tick);<a name="line.865"></a>
  874. <span class="sourceLineNo">866</span> }<a name="line.866"></a>
  875. <span class="sourceLineNo">867</span> }<a name="line.867"></a>
  876. <span class="sourceLineNo">868</span> }<a name="line.868"></a>
  877. <span class="sourceLineNo">869</span> return ticks;<a name="line.869"></a>
  878. <span class="sourceLineNo">870</span><a name="line.870"></a>
  879. <span class="sourceLineNo">871</span> }<a name="line.871"></a>
  880. <span class="sourceLineNo">872</span><a name="line.872"></a>
  881. <span class="sourceLineNo">873</span> /**<a name="line.873"></a>
  882. <span class="sourceLineNo">874</span> * Calculates the positions of the tick labels for the axis, storing the<a name="line.874"></a>
  883. <span class="sourceLineNo">875</span> * results in the tick label list (ready for drawing).<a name="line.875"></a>
  884. <span class="sourceLineNo">876</span> *<a name="line.876"></a>
  885. <span class="sourceLineNo">877</span> * @param g2 the graphics device.<a name="line.877"></a>
  886. <span class="sourceLineNo">878</span> * @param dataArea the area in which the plot should be drawn.<a name="line.878"></a>
  887. <span class="sourceLineNo">879</span> * @param edge the location of the axis.<a name="line.879"></a>
  888. <span class="sourceLineNo">880</span> *<a name="line.880"></a>
  889. <span class="sourceLineNo">881</span> * @return A list of ticks.<a name="line.881"></a>
  890. <span class="sourceLineNo">882</span> */<a name="line.882"></a>
  891. <span class="sourceLineNo">883</span> @Override<a name="line.883"></a>
  892. <span class="sourceLineNo">884</span> protected List refreshTicksVertical(Graphics2D g2, Rectangle2D dataArea,<a name="line.884"></a>
  893. <span class="sourceLineNo">885</span> RectangleEdge edge) {<a name="line.885"></a>
  894. <span class="sourceLineNo">886</span><a name="line.886"></a>
  895. <span class="sourceLineNo">887</span> List ticks = new java.util.ArrayList();<a name="line.887"></a>
  896. <span class="sourceLineNo">888</span><a name="line.888"></a>
  897. <span class="sourceLineNo">889</span> //get lower bound value:<a name="line.889"></a>
  898. <span class="sourceLineNo">890</span> double lowerBoundVal = getRange().getLowerBound();<a name="line.890"></a>
  899. <span class="sourceLineNo">891</span> //if small log values and lower bound value too small<a name="line.891"></a>
  900. <span class="sourceLineNo">892</span> // then set to a small value (don't allow &lt;= 0):<a name="line.892"></a>
  901. <span class="sourceLineNo">893</span> if (this.smallLogFlag &amp;&amp; lowerBoundVal &lt; SMALL_LOG_VALUE) {<a name="line.893"></a>
  902. <span class="sourceLineNo">894</span> lowerBoundVal = SMALL_LOG_VALUE;<a name="line.894"></a>
  903. <span class="sourceLineNo">895</span> }<a name="line.895"></a>
  904. <span class="sourceLineNo">896</span> //get upper bound value<a name="line.896"></a>
  905. <span class="sourceLineNo">897</span> double upperBoundVal = getRange().getUpperBound();<a name="line.897"></a>
  906. <span class="sourceLineNo">898</span><a name="line.898"></a>
  907. <span class="sourceLineNo">899</span> //get log10 version of lower bound and round to integer:<a name="line.899"></a>
  908. <span class="sourceLineNo">900</span> int iBegCount = (int) Math.rint(switchedLog10(lowerBoundVal));<a name="line.900"></a>
  909. <span class="sourceLineNo">901</span> //get log10 version of upper bound and round to integer:<a name="line.901"></a>
  910. <span class="sourceLineNo">902</span> int iEndCount = (int) Math.rint(switchedLog10(upperBoundVal));<a name="line.902"></a>
  911. <span class="sourceLineNo">903</span><a name="line.903"></a>
  912. <span class="sourceLineNo">904</span> if (iBegCount == iEndCount &amp;&amp; iBegCount &gt; 0<a name="line.904"></a>
  913. <span class="sourceLineNo">905</span> &amp;&amp; Math.pow(10, iBegCount) &gt; lowerBoundVal) {<a name="line.905"></a>
  914. <span class="sourceLineNo">906</span> //only 1 power of 10 value, it's &gt; 0 and its resulting<a name="line.906"></a>
  915. <span class="sourceLineNo">907</span> // tick value will be larger than lower bound of data<a name="line.907"></a>
  916. <span class="sourceLineNo">908</span> --iBegCount; //decrement to generate more ticks<a name="line.908"></a>
  917. <span class="sourceLineNo">909</span> }<a name="line.909"></a>
  918. <span class="sourceLineNo">910</span><a name="line.910"></a>
  919. <span class="sourceLineNo">911</span> double tickVal;<a name="line.911"></a>
  920. <span class="sourceLineNo">912</span> String tickLabel;<a name="line.912"></a>
  921. <span class="sourceLineNo">913</span> boolean zeroTickFlag = false;<a name="line.913"></a>
  922. <span class="sourceLineNo">914</span> for (int i = iBegCount; i &lt;= iEndCount; i++) {<a name="line.914"></a>
  923. <span class="sourceLineNo">915</span> //for each tick with a label to be displayed<a name="line.915"></a>
  924. <span class="sourceLineNo">916</span> int jEndCount = 10;<a name="line.916"></a>
  925. <span class="sourceLineNo">917</span> if (i == iEndCount) {<a name="line.917"></a>
  926. <span class="sourceLineNo">918</span> jEndCount = 1;<a name="line.918"></a>
  927. <span class="sourceLineNo">919</span> }<a name="line.919"></a>
  928. <span class="sourceLineNo">920</span><a name="line.920"></a>
  929. <span class="sourceLineNo">921</span> for (int j = 0; j &lt; jEndCount; j++) {<a name="line.921"></a>
  930. <span class="sourceLineNo">922</span> //for each tick to be displayed<a name="line.922"></a>
  931. <span class="sourceLineNo">923</span> if (this.smallLogFlag) {<a name="line.923"></a>
  932. <span class="sourceLineNo">924</span> //small log values in use<a name="line.924"></a>
  933. <span class="sourceLineNo">925</span> tickVal = Math.pow(10, i) + (Math.pow(10, i) * j);<a name="line.925"></a>
  934. <span class="sourceLineNo">926</span> if (j == 0) {<a name="line.926"></a>
  935. <span class="sourceLineNo">927</span> //first tick of group; create label text<a name="line.927"></a>
  936. <span class="sourceLineNo">928</span> if (this.log10TickLabelsFlag) {<a name="line.928"></a>
  937. <span class="sourceLineNo">929</span> //if flag then<a name="line.929"></a>
  938. <span class="sourceLineNo">930</span> tickLabel = "10^" + i; //create "log10"-type label<a name="line.930"></a>
  939. <span class="sourceLineNo">931</span> }<a name="line.931"></a>
  940. <span class="sourceLineNo">932</span> else { //not "log10"-type label<a name="line.932"></a>
  941. <span class="sourceLineNo">933</span> if (this.expTickLabelsFlag) {<a name="line.933"></a>
  942. <span class="sourceLineNo">934</span> //if flag then<a name="line.934"></a>
  943. <span class="sourceLineNo">935</span> tickLabel = "1e" + i; //create "1e#"-type label<a name="line.935"></a>
  944. <span class="sourceLineNo">936</span> }<a name="line.936"></a>
  945. <span class="sourceLineNo">937</span> else { //not "1e#"-type label<a name="line.937"></a>
  946. <span class="sourceLineNo">938</span> if (i &gt;= 0) { // if positive exponent then<a name="line.938"></a>
  947. <span class="sourceLineNo">939</span> // make integer<a name="line.939"></a>
  948. <span class="sourceLineNo">940</span> NumberFormat format<a name="line.940"></a>
  949. <span class="sourceLineNo">941</span> = getNumberFormatOverride();<a name="line.941"></a>
  950. <span class="sourceLineNo">942</span> if (format != null) {<a name="line.942"></a>
  951. <span class="sourceLineNo">943</span> tickLabel = format.format(tickVal);<a name="line.943"></a>
  952. <span class="sourceLineNo">944</span> }<a name="line.944"></a>
  953. <span class="sourceLineNo">945</span> else {<a name="line.945"></a>
  954. <span class="sourceLineNo">946</span> tickLabel = Long.toString((long)<a name="line.946"></a>
  955. <span class="sourceLineNo">947</span> Math.rint(tickVal));<a name="line.947"></a>
  956. <span class="sourceLineNo">948</span> }<a name="line.948"></a>
  957. <span class="sourceLineNo">949</span> }<a name="line.949"></a>
  958. <span class="sourceLineNo">950</span> else {<a name="line.950"></a>
  959. <span class="sourceLineNo">951</span> //negative exponent; create fractional value<a name="line.951"></a>
  960. <span class="sourceLineNo">952</span> //set exact number of fractional digits to<a name="line.952"></a>
  961. <span class="sourceLineNo">953</span> // be shown:<a name="line.953"></a>
  962. <span class="sourceLineNo">954</span> this.numberFormatterObj<a name="line.954"></a>
  963. <span class="sourceLineNo">955</span> .setMaximumFractionDigits(-i);<a name="line.955"></a>
  964. <span class="sourceLineNo">956</span> //create tick label:<a name="line.956"></a>
  965. <span class="sourceLineNo">957</span> tickLabel = this.numberFormatterObj.format(<a name="line.957"></a>
  966. <span class="sourceLineNo">958</span> tickVal);<a name="line.958"></a>
  967. <span class="sourceLineNo">959</span> }<a name="line.959"></a>
  968. <span class="sourceLineNo">960</span> }<a name="line.960"></a>
  969. <span class="sourceLineNo">961</span> }<a name="line.961"></a>
  970. <span class="sourceLineNo">962</span> }<a name="line.962"></a>
  971. <span class="sourceLineNo">963</span> else { //not first tick to be displayed<a name="line.963"></a>
  972. <span class="sourceLineNo">964</span> tickLabel = ""; //no tick label<a name="line.964"></a>
  973. <span class="sourceLineNo">965</span> }<a name="line.965"></a>
  974. <span class="sourceLineNo">966</span> }<a name="line.966"></a>
  975. <span class="sourceLineNo">967</span> else { //not small log values in use; allow for values &lt;= 0<a name="line.967"></a>
  976. <span class="sourceLineNo">968</span> if (zeroTickFlag) { //if did zero tick last iter then<a name="line.968"></a>
  977. <span class="sourceLineNo">969</span> --j;<a name="line.969"></a>
  978. <span class="sourceLineNo">970</span> } //decrement to do 1.0 tick now<a name="line.970"></a>
  979. <span class="sourceLineNo">971</span> tickVal = (i &gt;= 0) ? Math.pow(10, i) + (Math.pow(10, i) * j)<a name="line.971"></a>
  980. <span class="sourceLineNo">972</span> : -(Math.pow(10, -i) - (Math.pow(10, -i - 1) * j));<a name="line.972"></a>
  981. <span class="sourceLineNo">973</span> if (j == 0) { //first tick of group<a name="line.973"></a>
  982. <span class="sourceLineNo">974</span> if (!zeroTickFlag) { // did not do zero tick last<a name="line.974"></a>
  983. <span class="sourceLineNo">975</span> // iteration<a name="line.975"></a>
  984. <span class="sourceLineNo">976</span> if (i &gt; iBegCount &amp;&amp; i &lt; iEndCount<a name="line.976"></a>
  985. <span class="sourceLineNo">977</span> &amp;&amp; Math.abs(tickVal - 1.0) &lt; 0.0001) {<a name="line.977"></a>
  986. <span class="sourceLineNo">978</span> // not first or last tick on graph and value<a name="line.978"></a>
  987. <span class="sourceLineNo">979</span> // is 1.0<a name="line.979"></a>
  988. <span class="sourceLineNo">980</span> tickVal = 0.0; //change value to 0.0<a name="line.980"></a>
  989. <span class="sourceLineNo">981</span> zeroTickFlag = true; //indicate zero tick<a name="line.981"></a>
  990. <span class="sourceLineNo">982</span> tickLabel = "0"; //create label for tick<a name="line.982"></a>
  991. <span class="sourceLineNo">983</span> }<a name="line.983"></a>
  992. <span class="sourceLineNo">984</span> else {<a name="line.984"></a>
  993. <span class="sourceLineNo">985</span> //first or last tick on graph or value is 1.0<a name="line.985"></a>
  994. <span class="sourceLineNo">986</span> //create label for tick:<a name="line.986"></a>
  995. <span class="sourceLineNo">987</span> if (this.log10TickLabelsFlag) {<a name="line.987"></a>
  996. <span class="sourceLineNo">988</span> //create "log10"-type label<a name="line.988"></a>
  997. <span class="sourceLineNo">989</span> tickLabel = (((i &lt; 0) ? "-" : "")<a name="line.989"></a>
  998. <span class="sourceLineNo">990</span> + "10^" + Math.abs(i));<a name="line.990"></a>
  999. <span class="sourceLineNo">991</span> }<a name="line.991"></a>
  1000. <span class="sourceLineNo">992</span> else {<a name="line.992"></a>
  1001. <span class="sourceLineNo">993</span> if (this.expTickLabelsFlag) {<a name="line.993"></a>
  1002. <span class="sourceLineNo">994</span> //create "1e#"-type label<a name="line.994"></a>
  1003. <span class="sourceLineNo">995</span> tickLabel = (((i &lt; 0) ? "-" : "")<a name="line.995"></a>
  1004. <span class="sourceLineNo">996</span> + "1e" + Math.abs(i));<a name="line.996"></a>
  1005. <span class="sourceLineNo">997</span> }<a name="line.997"></a>
  1006. <span class="sourceLineNo">998</span> else {<a name="line.998"></a>
  1007. <span class="sourceLineNo">999</span> NumberFormat format<a name="line.999"></a>
  1008. <span class="sourceLineNo">1000</span> = getNumberFormatOverride();<a name="line.1000"></a>
  1009. <span class="sourceLineNo">1001</span> if (format != null) {<a name="line.1001"></a>
  1010. <span class="sourceLineNo">1002</span> tickLabel = format.format(tickVal);<a name="line.1002"></a>
  1011. <span class="sourceLineNo">1003</span> }<a name="line.1003"></a>
  1012. <span class="sourceLineNo">1004</span> else {<a name="line.1004"></a>
  1013. <span class="sourceLineNo">1005</span> tickLabel = Long.toString(<a name="line.1005"></a>
  1014. <span class="sourceLineNo">1006</span> (long) Math.rint(tickVal));<a name="line.1006"></a>
  1015. <span class="sourceLineNo">1007</span> }<a name="line.1007"></a>
  1016. <span class="sourceLineNo">1008</span> }<a name="line.1008"></a>
  1017. <span class="sourceLineNo">1009</span> }<a name="line.1009"></a>
  1018. <span class="sourceLineNo">1010</span> }<a name="line.1010"></a>
  1019. <span class="sourceLineNo">1011</span> }<a name="line.1011"></a>
  1020. <span class="sourceLineNo">1012</span> else { // did zero tick last iteration<a name="line.1012"></a>
  1021. <span class="sourceLineNo">1013</span> tickLabel = ""; //no label<a name="line.1013"></a>
  1022. <span class="sourceLineNo">1014</span> zeroTickFlag = false; //clear flag<a name="line.1014"></a>
  1023. <span class="sourceLineNo">1015</span> }<a name="line.1015"></a>
  1024. <span class="sourceLineNo">1016</span> }<a name="line.1016"></a>
  1025. <span class="sourceLineNo">1017</span> else { // not first tick of group<a name="line.1017"></a>
  1026. <span class="sourceLineNo">1018</span> tickLabel = ""; //no label<a name="line.1018"></a>
  1027. <span class="sourceLineNo">1019</span> zeroTickFlag = false; //make sure flag cleared<a name="line.1019"></a>
  1028. <span class="sourceLineNo">1020</span> }<a name="line.1020"></a>
  1029. <span class="sourceLineNo">1021</span> }<a name="line.1021"></a>
  1030. <span class="sourceLineNo">1022</span><a name="line.1022"></a>
  1031. <span class="sourceLineNo">1023</span> if (tickVal &gt; upperBoundVal) {<a name="line.1023"></a>
  1032. <span class="sourceLineNo">1024</span> return ticks; //if past highest data value then exit method<a name="line.1024"></a>
  1033. <span class="sourceLineNo">1025</span> }<a name="line.1025"></a>
  1034. <span class="sourceLineNo">1026</span><a name="line.1026"></a>
  1035. <span class="sourceLineNo">1027</span> if (tickVal &gt;= lowerBoundVal - SMALL_LOG_VALUE) {<a name="line.1027"></a>
  1036. <span class="sourceLineNo">1028</span> //tick value not below lowest data value<a name="line.1028"></a>
  1037. <span class="sourceLineNo">1029</span> TextAnchor anchor;<a name="line.1029"></a>
  1038. <span class="sourceLineNo">1030</span> TextAnchor rotationAnchor;<a name="line.1030"></a>
  1039. <span class="sourceLineNo">1031</span> double angle = 0.0;<a name="line.1031"></a>
  1040. <span class="sourceLineNo">1032</span> if (isVerticalTickLabels()) {<a name="line.1032"></a>
  1041. <span class="sourceLineNo">1033</span> if (edge == RectangleEdge.LEFT) {<a name="line.1033"></a>
  1042. <span class="sourceLineNo">1034</span> anchor = TextAnchor.BOTTOM_CENTER;<a name="line.1034"></a>
  1043. <span class="sourceLineNo">1035</span> rotationAnchor = TextAnchor.BOTTOM_CENTER;<a name="line.1035"></a>
  1044. <span class="sourceLineNo">1036</span> angle = -Math.PI / 2.0;<a name="line.1036"></a>
  1045. <span class="sourceLineNo">1037</span> }<a name="line.1037"></a>
  1046. <span class="sourceLineNo">1038</span> else {<a name="line.1038"></a>
  1047. <span class="sourceLineNo">1039</span> anchor = TextAnchor.BOTTOM_CENTER;<a name="line.1039"></a>
  1048. <span class="sourceLineNo">1040</span> rotationAnchor = TextAnchor.BOTTOM_CENTER;<a name="line.1040"></a>
  1049. <span class="sourceLineNo">1041</span> angle = Math.PI / 2.0;<a name="line.1041"></a>
  1050. <span class="sourceLineNo">1042</span> }<a name="line.1042"></a>
  1051. <span class="sourceLineNo">1043</span> }<a name="line.1043"></a>
  1052. <span class="sourceLineNo">1044</span> else {<a name="line.1044"></a>
  1053. <span class="sourceLineNo">1045</span> if (edge == RectangleEdge.LEFT) {<a name="line.1045"></a>
  1054. <span class="sourceLineNo">1046</span> anchor = TextAnchor.CENTER_RIGHT;<a name="line.1046"></a>
  1055. <span class="sourceLineNo">1047</span> rotationAnchor = TextAnchor.CENTER_RIGHT;<a name="line.1047"></a>
  1056. <span class="sourceLineNo">1048</span> }<a name="line.1048"></a>
  1057. <span class="sourceLineNo">1049</span> else {<a name="line.1049"></a>
  1058. <span class="sourceLineNo">1050</span> anchor = TextAnchor.CENTER_LEFT;<a name="line.1050"></a>
  1059. <span class="sourceLineNo">1051</span> rotationAnchor = TextAnchor.CENTER_LEFT;<a name="line.1051"></a>
  1060. <span class="sourceLineNo">1052</span> }<a name="line.1052"></a>
  1061. <span class="sourceLineNo">1053</span> }<a name="line.1053"></a>
  1062. <span class="sourceLineNo">1054</span> //create tick object and add to list:<a name="line.1054"></a>
  1063. <span class="sourceLineNo">1055</span> ticks.add(new NumberTick(new Double(tickVal), tickLabel,<a name="line.1055"></a>
  1064. <span class="sourceLineNo">1056</span> anchor, rotationAnchor, angle));<a name="line.1056"></a>
  1065. <span class="sourceLineNo">1057</span> }<a name="line.1057"></a>
  1066. <span class="sourceLineNo">1058</span> }<a name="line.1058"></a>
  1067. <span class="sourceLineNo">1059</span> }<a name="line.1059"></a>
  1068. <span class="sourceLineNo">1060</span> return ticks;<a name="line.1060"></a>
  1069. <span class="sourceLineNo">1061</span> }<a name="line.1061"></a>
  1070. <span class="sourceLineNo">1062</span><a name="line.1062"></a>
  1071. <span class="sourceLineNo">1063</span> /**<a name="line.1063"></a>
  1072. <span class="sourceLineNo">1064</span> * Converts the given value to a tick label string.<a name="line.1064"></a>
  1073. <span class="sourceLineNo">1065</span> *<a name="line.1065"></a>
  1074. <span class="sourceLineNo">1066</span> * @param val the value to convert.<a name="line.1066"></a>
  1075. <span class="sourceLineNo">1067</span> * @param forceFmtFlag true to force the number-formatter object<a name="line.1067"></a>
  1076. <span class="sourceLineNo">1068</span> * to be used.<a name="line.1068"></a>
  1077. <span class="sourceLineNo">1069</span> *<a name="line.1069"></a>
  1078. <span class="sourceLineNo">1070</span> * @return The tick label string.<a name="line.1070"></a>
  1079. <span class="sourceLineNo">1071</span> */<a name="line.1071"></a>
  1080. <span class="sourceLineNo">1072</span> protected String makeTickLabel(double val, boolean forceFmtFlag) {<a name="line.1072"></a>
  1081. <span class="sourceLineNo">1073</span> if (this.expTickLabelsFlag || forceFmtFlag) {<a name="line.1073"></a>
  1082. <span class="sourceLineNo">1074</span> //using exponents or force-formatter flag is set<a name="line.1074"></a>
  1083. <span class="sourceLineNo">1075</span> // (convert 'E' to lower-case 'e'):<a name="line.1075"></a>
  1084. <span class="sourceLineNo">1076</span> return this.numberFormatterObj.format(val).toLowerCase();<a name="line.1076"></a>
  1085. <span class="sourceLineNo">1077</span> }<a name="line.1077"></a>
  1086. <span class="sourceLineNo">1078</span> return getTickUnit().valueToString(val);<a name="line.1078"></a>
  1087. <span class="sourceLineNo">1079</span> }<a name="line.1079"></a>
  1088. <span class="sourceLineNo">1080</span><a name="line.1080"></a>
  1089. <span class="sourceLineNo">1081</span> /**<a name="line.1081"></a>
  1090. <span class="sourceLineNo">1082</span> * Converts the given value to a tick label string.<a name="line.1082"></a>
  1091. <span class="sourceLineNo">1083</span> * @param val the value to convert.<a name="line.1083"></a>
  1092. <span class="sourceLineNo">1084</span> *<a name="line.1084"></a>
  1093. <span class="sourceLineNo">1085</span> * @return The tick label string.<a name="line.1085"></a>
  1094. <span class="sourceLineNo">1086</span> */<a name="line.1086"></a>
  1095. <span class="sourceLineNo">1087</span> protected String makeTickLabel(double val) {<a name="line.1087"></a>
  1096. <span class="sourceLineNo">1088</span> return makeTickLabel(val, false);<a name="line.1088"></a>
  1097. <span class="sourceLineNo">1089</span> }<a name="line.1089"></a>
  1098. <span class="sourceLineNo">1090</span><a name="line.1090"></a>
  1099. <span class="sourceLineNo">1091</span>}<a name="line.1091"></a>
  1100. </pre>
  1101. </div>
  1102. </body>
  1103. </html>