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- <pre><span class="sourceLineNo">001</span>/* ===========================================================<a name="line.1"></a>
- <span class="sourceLineNo">002</span> * JFreeChart : a free chart library for the Java(tm) platform<a name="line.2"></a>
- <span class="sourceLineNo">003</span> * ===========================================================<a name="line.3"></a>
- <span class="sourceLineNo">004</span> *<a name="line.4"></a>
- <span class="sourceLineNo">005</span> * (C) Copyright 2000-2013, by Object Refinery Limited and Contributors.<a name="line.5"></a>
- <span class="sourceLineNo">006</span> *<a name="line.6"></a>
- <span class="sourceLineNo">007</span> * Project Info: http://www.jfree.org/jfreechart/index.html<a name="line.7"></a>
- <span class="sourceLineNo">008</span> *<a name="line.8"></a>
- <span class="sourceLineNo">009</span> * This library is free software; you can redistribute it and/or modify it<a name="line.9"></a>
- <span class="sourceLineNo">010</span> * under the terms of the GNU Lesser General Public License as published by<a name="line.10"></a>
- <span class="sourceLineNo">011</span> * the Free Software Foundation; either version 2.1 of the License, or<a name="line.11"></a>
- <span class="sourceLineNo">012</span> * (at your option) any later version.<a name="line.12"></a>
- <span class="sourceLineNo">013</span> *<a name="line.13"></a>
- <span class="sourceLineNo">014</span> * This library is distributed in the hope that it will be useful, but<a name="line.14"></a>
- <span class="sourceLineNo">015</span> * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY<a name="line.15"></a>
- <span class="sourceLineNo">016</span> * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public<a name="line.16"></a>
- <span class="sourceLineNo">017</span> * License for more details.<a name="line.17"></a>
- <span class="sourceLineNo">018</span> *<a name="line.18"></a>
- <span class="sourceLineNo">019</span> * You should have received a copy of the GNU Lesser General Public<a name="line.19"></a>
- <span class="sourceLineNo">020</span> * License along with this library; if not, write to the Free Software<a name="line.20"></a>
- <span class="sourceLineNo">021</span> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,<a name="line.21"></a>
- <span class="sourceLineNo">022</span> * USA.<a name="line.22"></a>
- <span class="sourceLineNo">023</span> *<a name="line.23"></a>
- <span class="sourceLineNo">024</span> * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. <a name="line.24"></a>
- <span class="sourceLineNo">025</span> * Other names may be trademarks of their respective owners.]<a name="line.25"></a>
- <span class="sourceLineNo">026</span> *<a name="line.26"></a>
- <span class="sourceLineNo">027</span> * --------------------------<a name="line.27"></a>
- <span class="sourceLineNo">028</span> * NonGridContourDataset.java<a name="line.28"></a>
- <span class="sourceLineNo">029</span> * --------------------------<a name="line.29"></a>
- <span class="sourceLineNo">030</span> * (C) Copyright 2002-2008, by David M. O'Donnell.<a name="line.30"></a>
- <span class="sourceLineNo">031</span> *<a name="line.31"></a>
- <span class="sourceLineNo">032</span> * Original Author: David M. O'Donnell;<a name="line.32"></a>
- <span class="sourceLineNo">033</span> * Contributor(s): David Gilbert (for Object Refinery Limited);<a name="line.33"></a>
- <span class="sourceLineNo">034</span> *<a name="line.34"></a>
- <span class="sourceLineNo">035</span> * Changes (from 24-Jul-2003)<a name="line.35"></a>
- <span class="sourceLineNo">036</span> * --------------------------<a name="line.36"></a>
- <span class="sourceLineNo">037</span> * 24-Jul-2003 : Added standard header (DG);<a name="line.37"></a>
- <span class="sourceLineNo">038</span> * ------------- JFREECHART 1.0.x ---------------------------------------------<a name="line.38"></a>
- <span class="sourceLineNo">039</span> * 31-Jan-2007 : Deprecated (DG);<a name="line.39"></a>
- <span class="sourceLineNo">040</span> *<a name="line.40"></a>
- <span class="sourceLineNo">041</span> */<a name="line.41"></a>
- <span class="sourceLineNo">042</span><a name="line.42"></a>
- <span class="sourceLineNo">043</span>package org.jfree.data.contour;<a name="line.43"></a>
- <span class="sourceLineNo">044</span><a name="line.44"></a>
- <span class="sourceLineNo">045</span>import org.jfree.chart.plot.XYPlot;<a name="line.45"></a>
- <span class="sourceLineNo">046</span>import org.jfree.chart.renderer.xy.XYBlockRenderer;<a name="line.46"></a>
- <span class="sourceLineNo">047</span>import org.jfree.data.Range;<a name="line.47"></a>
- <span class="sourceLineNo">048</span><a name="line.48"></a>
- <span class="sourceLineNo">049</span>/**<a name="line.49"></a>
- <span class="sourceLineNo">050</span> * A convenience class that extends the {@link DefaultContourDataset} to<a name="line.50"></a>
- <span class="sourceLineNo">051</span> * accommodate non-grid data.<a name="line.51"></a>
- <span class="sourceLineNo">052</span> *<a name="line.52"></a>
- <span class="sourceLineNo">053</span> * @deprecated This class is no longer supported (as of version 1.0.4). If<a name="line.53"></a>
- <span class="sourceLineNo">054</span> * you are creating contour plots, please try to use {@link XYPlot} and<a name="line.54"></a>
- <span class="sourceLineNo">055</span> * {@link XYBlockRenderer}.<a name="line.55"></a>
- <span class="sourceLineNo">056</span> */<a name="line.56"></a>
- <span class="sourceLineNo">057</span>public class NonGridContourDataset extends DefaultContourDataset {<a name="line.57"></a>
- <span class="sourceLineNo">058</span><a name="line.58"></a>
- <span class="sourceLineNo">059</span> /** Default number of x values. */<a name="line.59"></a>
- <span class="sourceLineNo">060</span> static final int DEFAULT_NUM_X = 50;<a name="line.60"></a>
- <span class="sourceLineNo">061</span><a name="line.61"></a>
- <span class="sourceLineNo">062</span> /** Default number of y values. */<a name="line.62"></a>
- <span class="sourceLineNo">063</span> static final int DEFAULT_NUM_Y = 50;<a name="line.63"></a>
- <span class="sourceLineNo">064</span><a name="line.64"></a>
- <span class="sourceLineNo">065</span> /** Default power. */<a name="line.65"></a>
- <span class="sourceLineNo">066</span> static final int DEFAULT_POWER = 4;<a name="line.66"></a>
- <span class="sourceLineNo">067</span><a name="line.67"></a>
- <span class="sourceLineNo">068</span> /**<a name="line.68"></a>
- <span class="sourceLineNo">069</span> * Default constructor.<a name="line.69"></a>
- <span class="sourceLineNo">070</span> */<a name="line.70"></a>
- <span class="sourceLineNo">071</span> public NonGridContourDataset() {<a name="line.71"></a>
- <span class="sourceLineNo">072</span> super();<a name="line.72"></a>
- <span class="sourceLineNo">073</span> }<a name="line.73"></a>
- <span class="sourceLineNo">074</span><a name="line.74"></a>
- <span class="sourceLineNo">075</span> /**<a name="line.75"></a>
- <span class="sourceLineNo">076</span> * Constructor for NonGridContourDataset. Uses default values for grid<a name="line.76"></a>
- <span class="sourceLineNo">077</span> * dimensions and weighting.<a name="line.77"></a>
- <span class="sourceLineNo">078</span> *<a name="line.78"></a>
- <span class="sourceLineNo">079</span> * @param seriesName the series name.<a name="line.79"></a>
- <span class="sourceLineNo">080</span> * @param xData the x values.<a name="line.80"></a>
- <span class="sourceLineNo">081</span> * @param yData the y values.<a name="line.81"></a>
- <span class="sourceLineNo">082</span> * @param zData the z values.<a name="line.82"></a>
- <span class="sourceLineNo">083</span> */<a name="line.83"></a>
- <span class="sourceLineNo">084</span> public NonGridContourDataset(String seriesName,<a name="line.84"></a>
- <span class="sourceLineNo">085</span> Object[] xData, Object[] yData,<a name="line.85"></a>
- <span class="sourceLineNo">086</span> Object[] zData) {<a name="line.86"></a>
- <span class="sourceLineNo">087</span> super(seriesName, xData, yData, zData);<a name="line.87"></a>
- <span class="sourceLineNo">088</span> buildGrid(DEFAULT_NUM_X, DEFAULT_NUM_Y, DEFAULT_POWER);<a name="line.88"></a>
- <span class="sourceLineNo">089</span> }<a name="line.89"></a>
- <span class="sourceLineNo">090</span><a name="line.90"></a>
- <span class="sourceLineNo">091</span> /**<a name="line.91"></a>
- <span class="sourceLineNo">092</span> * Constructor for NonGridContourDataset.<a name="line.92"></a>
- <span class="sourceLineNo">093</span> *<a name="line.93"></a>
- <span class="sourceLineNo">094</span> * @param seriesName the series name.<a name="line.94"></a>
- <span class="sourceLineNo">095</span> * @param xData the x values.<a name="line.95"></a>
- <span class="sourceLineNo">096</span> * @param yData the y values.<a name="line.96"></a>
- <span class="sourceLineNo">097</span> * @param zData the z values.<a name="line.97"></a>
- <span class="sourceLineNo">098</span> * @param numX number grid cells in along the x-axis<a name="line.98"></a>
- <span class="sourceLineNo">099</span> * @param numY number grid cells in along the y-axis<a name="line.99"></a>
- <span class="sourceLineNo">100</span> * @param power exponent for inverse distance weighting<a name="line.100"></a>
- <span class="sourceLineNo">101</span> */<a name="line.101"></a>
- <span class="sourceLineNo">102</span> public NonGridContourDataset(String seriesName,<a name="line.102"></a>
- <span class="sourceLineNo">103</span> Object[] xData, Object[] yData,<a name="line.103"></a>
- <span class="sourceLineNo">104</span> Object[] zData,<a name="line.104"></a>
- <span class="sourceLineNo">105</span> int numX, int numY, int power) {<a name="line.105"></a>
- <span class="sourceLineNo">106</span> super(seriesName, xData, yData, zData);<a name="line.106"></a>
- <span class="sourceLineNo">107</span> buildGrid(numX, numY, power);<a name="line.107"></a>
- <span class="sourceLineNo">108</span> }<a name="line.108"></a>
- <span class="sourceLineNo">109</span><a name="line.109"></a>
- <span class="sourceLineNo">110</span> /**<a name="line.110"></a>
- <span class="sourceLineNo">111</span> * Builds a regular grid. Maps the non-grid data into the regular grid<a name="line.111"></a>
- <span class="sourceLineNo">112</span> * using an inverse distance between grid and non-grid points. Weighting<a name="line.112"></a>
- <span class="sourceLineNo">113</span> * of distance can be controlled by setting through the power parameter<a name="line.113"></a>
- <span class="sourceLineNo">114</span> * that controls the exponent used on the distance weighting<a name="line.114"></a>
- <span class="sourceLineNo">115</span> * (e.g., distance^power).<a name="line.115"></a>
- <span class="sourceLineNo">116</span> *<a name="line.116"></a>
- <span class="sourceLineNo">117</span> * @param numX number grid points in along the x-axis<a name="line.117"></a>
- <span class="sourceLineNo">118</span> * @param numY number grid points in along the y-axis<a name="line.118"></a>
- <span class="sourceLineNo">119</span> * @param power exponent for inverse distance weighting<a name="line.119"></a>
- <span class="sourceLineNo">120</span> */<a name="line.120"></a>
- <span class="sourceLineNo">121</span> protected void buildGrid(int numX, int numY, int power) {<a name="line.121"></a>
- <span class="sourceLineNo">122</span><a name="line.122"></a>
- <span class="sourceLineNo">123</span> int numValues = numX * numY;<a name="line.123"></a>
- <span class="sourceLineNo">124</span> double[] xGrid = new double[numValues];<a name="line.124"></a>
- <span class="sourceLineNo">125</span> double[] yGrid = new double [numValues];<a name="line.125"></a>
- <span class="sourceLineNo">126</span> double[] zGrid = new double [numValues];<a name="line.126"></a>
- <span class="sourceLineNo">127</span><a name="line.127"></a>
- <span class="sourceLineNo">128</span> // Find min, max for the x and y axes<a name="line.128"></a>
- <span class="sourceLineNo">129</span> double xMin = 1.e20;<a name="line.129"></a>
- <span class="sourceLineNo">130</span> for (int k = 0; k < this.xValues.length; k++) {<a name="line.130"></a>
- <span class="sourceLineNo">131</span> xMin = Math.min(xMin, this.xValues[k].doubleValue());<a name="line.131"></a>
- <span class="sourceLineNo">132</span> }<a name="line.132"></a>
- <span class="sourceLineNo">133</span><a name="line.133"></a>
- <span class="sourceLineNo">134</span> double xMax = -1.e20;<a name="line.134"></a>
- <span class="sourceLineNo">135</span> for (int k = 0; k < this.xValues.length; k++) {<a name="line.135"></a>
- <span class="sourceLineNo">136</span> xMax = Math.max(xMax, this.xValues[k].doubleValue());<a name="line.136"></a>
- <span class="sourceLineNo">137</span> }<a name="line.137"></a>
- <span class="sourceLineNo">138</span><a name="line.138"></a>
- <span class="sourceLineNo">139</span> double yMin = 1.e20;<a name="line.139"></a>
- <span class="sourceLineNo">140</span> for (int k = 0; k < this.yValues.length; k++) {<a name="line.140"></a>
- <span class="sourceLineNo">141</span> yMin = Math.min(yMin, this.yValues[k].doubleValue());<a name="line.141"></a>
- <span class="sourceLineNo">142</span> }<a name="line.142"></a>
- <span class="sourceLineNo">143</span><a name="line.143"></a>
- <span class="sourceLineNo">144</span> double yMax = -1.e20;<a name="line.144"></a>
- <span class="sourceLineNo">145</span> for (int k = 0; k < this.yValues.length; k++) {<a name="line.145"></a>
- <span class="sourceLineNo">146</span> yMax = Math.max(yMax, this.yValues[k].doubleValue());<a name="line.146"></a>
- <span class="sourceLineNo">147</span> }<a name="line.147"></a>
- <span class="sourceLineNo">148</span><a name="line.148"></a>
- <span class="sourceLineNo">149</span> Range xRange = new Range(xMin, xMax);<a name="line.149"></a>
- <span class="sourceLineNo">150</span> Range yRange = new Range(yMin, yMax);<a name="line.150"></a>
- <span class="sourceLineNo">151</span><a name="line.151"></a>
- <span class="sourceLineNo">152</span> xRange.getLength();<a name="line.152"></a>
- <span class="sourceLineNo">153</span> yRange.getLength();<a name="line.153"></a>
- <span class="sourceLineNo">154</span><a name="line.154"></a>
- <span class="sourceLineNo">155</span> // Determine the cell size<a name="line.155"></a>
- <span class="sourceLineNo">156</span> double dxGrid = xRange.getLength() / (numX - 1);<a name="line.156"></a>
- <span class="sourceLineNo">157</span> double dyGrid = yRange.getLength() / (numY - 1);<a name="line.157"></a>
- <span class="sourceLineNo">158</span><a name="line.158"></a>
- <span class="sourceLineNo">159</span> // Generate the grid<a name="line.159"></a>
- <span class="sourceLineNo">160</span> double x = 0.0;<a name="line.160"></a>
- <span class="sourceLineNo">161</span> for (int i = 0; i < numX; i++) {<a name="line.161"></a>
- <span class="sourceLineNo">162</span> if (i == 0) {<a name="line.162"></a>
- <span class="sourceLineNo">163</span> x = xMin;<a name="line.163"></a>
- <span class="sourceLineNo">164</span> }<a name="line.164"></a>
- <span class="sourceLineNo">165</span> else {<a name="line.165"></a>
- <span class="sourceLineNo">166</span> x += dxGrid;<a name="line.166"></a>
- <span class="sourceLineNo">167</span> }<a name="line.167"></a>
- <span class="sourceLineNo">168</span> double y = 0.0;<a name="line.168"></a>
- <span class="sourceLineNo">169</span> for (int j = 0; j < numY; j++) {<a name="line.169"></a>
- <span class="sourceLineNo">170</span> int k = numY * i + j;<a name="line.170"></a>
- <span class="sourceLineNo">171</span> xGrid[k] = x;<a name="line.171"></a>
- <span class="sourceLineNo">172</span> if (j == 0) {<a name="line.172"></a>
- <span class="sourceLineNo">173</span> y = yMin;<a name="line.173"></a>
- <span class="sourceLineNo">174</span> }<a name="line.174"></a>
- <span class="sourceLineNo">175</span> else {<a name="line.175"></a>
- <span class="sourceLineNo">176</span> y += dyGrid;<a name="line.176"></a>
- <span class="sourceLineNo">177</span> }<a name="line.177"></a>
- <span class="sourceLineNo">178</span> yGrid[k] = y;<a name="line.178"></a>
- <span class="sourceLineNo">179</span> }<a name="line.179"></a>
- <span class="sourceLineNo">180</span> }<a name="line.180"></a>
- <span class="sourceLineNo">181</span><a name="line.181"></a>
- <span class="sourceLineNo">182</span> // Map the nongrid data into the new regular grid<a name="line.182"></a>
- <span class="sourceLineNo">183</span> for (int kGrid = 0; kGrid < xGrid.length; kGrid++) {<a name="line.183"></a>
- <span class="sourceLineNo">184</span> double dTotal = 0.0;<a name="line.184"></a>
- <span class="sourceLineNo">185</span> zGrid[kGrid] = 0.0;<a name="line.185"></a>
- <span class="sourceLineNo">186</span> for (int k = 0; k < this.xValues.length; k++) {<a name="line.186"></a>
- <span class="sourceLineNo">187</span> double xPt = this.xValues[k].doubleValue();<a name="line.187"></a>
- <span class="sourceLineNo">188</span> double yPt = this.yValues[k].doubleValue();<a name="line.188"></a>
- <span class="sourceLineNo">189</span> double d = distance(xPt, yPt, xGrid[kGrid], yGrid[kGrid]);<a name="line.189"></a>
- <span class="sourceLineNo">190</span> if (power != 1) {<a name="line.190"></a>
- <span class="sourceLineNo">191</span> d = Math.pow(d, power);<a name="line.191"></a>
- <span class="sourceLineNo">192</span> }<a name="line.192"></a>
- <span class="sourceLineNo">193</span> d = Math.sqrt(d);<a name="line.193"></a>
- <span class="sourceLineNo">194</span> if (d > 0.0) {<a name="line.194"></a>
- <span class="sourceLineNo">195</span> d = 1.0 / d;<a name="line.195"></a>
- <span class="sourceLineNo">196</span> }<a name="line.196"></a>
- <span class="sourceLineNo">197</span> else { // if d is real small set the inverse to a large number<a name="line.197"></a>
- <span class="sourceLineNo">198</span> // to avoid INF<a name="line.198"></a>
- <span class="sourceLineNo">199</span> d = 1.e20;<a name="line.199"></a>
- <span class="sourceLineNo">200</span> }<a name="line.200"></a>
- <span class="sourceLineNo">201</span> if (this.zValues[k] != null) {<a name="line.201"></a>
- <span class="sourceLineNo">202</span> // scale by the inverse of distance^power<a name="line.202"></a>
- <span class="sourceLineNo">203</span> zGrid[kGrid] += this.zValues[k].doubleValue() * d;<a name="line.203"></a>
- <span class="sourceLineNo">204</span> }<a name="line.204"></a>
- <span class="sourceLineNo">205</span> dTotal += d;<a name="line.205"></a>
- <span class="sourceLineNo">206</span> }<a name="line.206"></a>
- <span class="sourceLineNo">207</span> zGrid[kGrid] = zGrid[kGrid] / dTotal; //remove distance of the sum<a name="line.207"></a>
- <span class="sourceLineNo">208</span> }<a name="line.208"></a>
- <span class="sourceLineNo">209</span><a name="line.209"></a>
- <span class="sourceLineNo">210</span> //initalize xValues, yValues, and zValues arrays.<a name="line.210"></a>
- <span class="sourceLineNo">211</span> initialize(<a name="line.211"></a>
- <span class="sourceLineNo">212</span> formObjectArray(xGrid), formObjectArray(yGrid),<a name="line.212"></a>
- <span class="sourceLineNo">213</span> formObjectArray(zGrid)<a name="line.213"></a>
- <span class="sourceLineNo">214</span> );<a name="line.214"></a>
- <span class="sourceLineNo">215</span><a name="line.215"></a>
- <span class="sourceLineNo">216</span> }<a name="line.216"></a>
- <span class="sourceLineNo">217</span><a name="line.217"></a>
- <span class="sourceLineNo">218</span> /**<a name="line.218"></a>
- <span class="sourceLineNo">219</span> * Calculates the distance between two points.<a name="line.219"></a>
- <span class="sourceLineNo">220</span> *<a name="line.220"></a>
- <span class="sourceLineNo">221</span> * @param xDataPt the x coordinate.<a name="line.221"></a>
- <span class="sourceLineNo">222</span> * @param yDataPt the y coordinate.<a name="line.222"></a>
- <span class="sourceLineNo">223</span> * @param xGrdPt the x grid coordinate.<a name="line.223"></a>
- <span class="sourceLineNo">224</span> * @param yGrdPt the y grid coordinate.<a name="line.224"></a>
- <span class="sourceLineNo">225</span> *<a name="line.225"></a>
- <span class="sourceLineNo">226</span> * @return The distance between two points.<a name="line.226"></a>
- <span class="sourceLineNo">227</span> */<a name="line.227"></a>
- <span class="sourceLineNo">228</span> protected double distance(double xDataPt,<a name="line.228"></a>
- <span class="sourceLineNo">229</span> double yDataPt,<a name="line.229"></a>
- <span class="sourceLineNo">230</span> double xGrdPt,<a name="line.230"></a>
- <span class="sourceLineNo">231</span> double yGrdPt) {<a name="line.231"></a>
- <span class="sourceLineNo">232</span> double dx = xDataPt - xGrdPt;<a name="line.232"></a>
- <span class="sourceLineNo">233</span> double dy = yDataPt - yGrdPt;<a name="line.233"></a>
- <span class="sourceLineNo">234</span> return Math.sqrt(dx * dx + dy * dy);<a name="line.234"></a>
- <span class="sourceLineNo">235</span> }<a name="line.235"></a>
- <span class="sourceLineNo">236</span><a name="line.236"></a>
- <span class="sourceLineNo">237</span>}<a name="line.237"></a>
- </pre>
- </div>
- </body>
- </html>
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