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DataUtilities.html

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  95. <div class="subTitle">org.jfree.data</div>
    96. 

  96. <h2 title="Class DataUtilities" class="title">Class DataUtilities</h2>
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  97. </div>
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  98. <div class="contentContainer">
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  100. <li>java.lang.Object</li>
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  103. <li>org.jfree.data.DataUtilities</li>
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  112. <pre>public abstract class <a href="../../../src-html/org/jfree/data/DataUtilities.html#line.59">DataUtilities</a>
    113. 

  113. extends java.lang.Object</pre>
    114. 

  114. <div class="block">Utility methods for use with some of the data classes (but not the datasets,
    115. 

  115.  see <a href="../../../org/jfree/data/general/DatasetUtilities.html" title="class in org.jfree.data.general"><code>DatasetUtilities</code></a>).</div>
    116. 

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    129. 

  129. <caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
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  130. <tr>
    131. 

  131. <th class="colOne" scope="col">Constructor and Description</th>
    132. 

  132. </tr>
    133. 

  133. <tr class="altColor">
    134. 

  134. <td class="colOne"><code><span class="memberNameLink"><a href="../../../org/jfree/data/DataUtilities.html#DataUtilities--">DataUtilities</a></span>()</code>&nbsp;</td>
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  144. <h3>Method Summary</h3>
    145. 

  145. <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
    146. 

  146. <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
    147. 

  147. <tr>
    148. 

  148. <th class="colFirst" scope="col">Modifier and Type</th>
    149. 

  149. <th class="colLast" scope="col">Method and Description</th>
    150. 

  150. </tr>
    151. 

  151. <tr id="i0" class="altColor">
    152. 

  152. <td class="colFirst"><code>static double</code></td>
    153. 

  153. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/jfree/data/DataUtilities.html#calculateColumnTotal-org.jfree.data.Values2D-int-">calculateColumnTotal</a></span>(<a href="../../../org/jfree/data/Values2D.html" title="interface in org.jfree.data">Values2D</a>&nbsp;data,
    154. 

  154.                     int&nbsp;column)</code>
    155. 

  155. <div class="block">Returns the total of the values in one column of the supplied data
    156. 

  156.  table.</div>
    157. 

  157. </td>
    158. 

  158. </tr>
    159. 

  159. <tr id="i1" class="rowColor">
    160. 

  160. <td class="colFirst"><code>static double</code></td>
    161. 

  161. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/jfree/data/DataUtilities.html#calculateColumnTotal-org.jfree.data.Values2D-int-int:A-">calculateColumnTotal</a></span>(<a href="../../../org/jfree/data/Values2D.html" title="interface in org.jfree.data">Values2D</a>&nbsp;data,
    162. 

  162.                     int&nbsp;column,
    163. 

  163.                     int[]&nbsp;validRows)</code>
    164. 

  164. <div class="block">Returns the total of the values in one column of the supplied data
    165. 

  165.  table by taking only the row numbers in the array into account.</div>
    166. 

  166. </td>
    167. 

  167. </tr>
    168. 

  168. <tr id="i2" class="altColor">
    169. 

  169. <td class="colFirst"><code>static double</code></td>
    170. 

  170. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/jfree/data/DataUtilities.html#calculateRowTotal-org.jfree.data.Values2D-int-">calculateRowTotal</a></span>(<a href="../../../org/jfree/data/Values2D.html" title="interface in org.jfree.data">Values2D</a>&nbsp;data,
    171. 

  171.                  int&nbsp;row)</code>
    172. 

  172. <div class="block">Returns the total of the values in one row of the supplied data
    173. 

  173.  table.</div>
    174. 

  174. </td>
    175. 

  175. </tr>
    176. 

  176. <tr id="i3" class="rowColor">
    177. 

  177. <td class="colFirst"><code>static double</code></td>
    178. 

  178. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/jfree/data/DataUtilities.html#calculateRowTotal-org.jfree.data.Values2D-int-int:A-">calculateRowTotal</a></span>(<a href="../../../org/jfree/data/Values2D.html" title="interface in org.jfree.data">Values2D</a>&nbsp;data,
    179. 

  179.                  int&nbsp;row,
    180. 

  180.                  int[]&nbsp;validCols)</code>
    181. 

  181. <div class="block">Returns the total of the values in one row of the supplied data
    182. 

  182.  table by taking only the column numbers in the array into account.</div>
    183. 

  183. </td>
    184. 

  184. </tr>
    185. 

  185. <tr id="i4" class="altColor">
    186. 

  186. <td class="colFirst"><code>static double[][]</code></td>
    187. 

  187. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/jfree/data/DataUtilities.html#clone-double:A:A-">clone</a></span>(double[][]&nbsp;source)</code>
    188. 

  188. <div class="block">Returns a clone of the specified array.</div>
    189. 

  189. </td>
    190. 

  190. </tr>
    191. 

  191. <tr id="i5" class="rowColor">
    192. 

  192. <td class="colFirst"><code>static java.lang.Number[]</code></td>
    193. 

  193. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/jfree/data/DataUtilities.html#createNumberArray-double:A-">createNumberArray</a></span>(double[]&nbsp;data)</code>
    194. 

  194. <div class="block">Constructs an array of <code>Number</code> objects from an array of
    195. 

  195.  <code>double</code> primitives.</div>
    196. 

  196. </td>
    197. 

  197. </tr>
    198. 

  198. <tr id="i6" class="altColor">
    199. 

  199. <td class="colFirst"><code>static java.lang.Number[][]</code></td>
    200. 

  200. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/jfree/data/DataUtilities.html#createNumberArray2D-double:A:A-">createNumberArray2D</a></span>(double[][]&nbsp;data)</code>
    201. 

  201. <div class="block">Constructs an array of arrays of <code>Number</code> objects from a
    202. 

  202.  corresponding structure containing <code>double</code> primitives.</div>
    203. 

  203. </td>
    204. 

  204. </tr>
    205. 

  205. <tr id="i7" class="rowColor">
    206. 

  206. <td class="colFirst"><code>static boolean</code></td>
    207. 

  207. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/jfree/data/DataUtilities.html#equal-double:A:A-double:A:A-">equal</a></span>(double[][]&nbsp;a,
    208. 

  208.      double[][]&nbsp;b)</code>
    209. 

  209. <div class="block">Tests two arrays for equality.</div>
    210. 

  210. </td>
    211. 

  211. </tr>
    212. 

  212. <tr id="i8" class="altColor">
    213. 

  213. <td class="colFirst"><code>static <a href="../../../org/jfree/data/KeyedValues.html" title="interface in org.jfree.data">KeyedValues</a></code></td>
    214. 

  214. <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/jfree/data/DataUtilities.html#getCumulativePercentages-org.jfree.data.KeyedValues-">getCumulativePercentages</a></span>(<a href="../../../org/jfree/data/KeyedValues.html" title="interface in org.jfree.data">KeyedValues</a>&nbsp;data)</code>
    215. 

  215. <div class="block">Returns a <a href="../../../org/jfree/data/KeyedValues.html" title="interface in org.jfree.data"><code>KeyedValues</code></a> instance that contains the cumulative
    216. 

  216.  percentage values for the data in another <a href="../../../org/jfree/data/KeyedValues.html" title="interface in org.jfree.data"><code>KeyedValues</code></a> instance.</div>
    217. 

  217. </td>
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  223. </a>
    224. 

  224. <h3>Methods inherited from class&nbsp;java.lang.Object</h3>
    225. 

  225. <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
    226. 

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  240. <h3>Constructor Detail</h3>
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    246. 

  246. <h4>DataUtilities</h4>
    247. 

  247. <pre>public&nbsp;<a href="../../../src-html/org/jfree/data/DataUtilities.html#line.59">DataUtilities</a>()</pre>
    248. 

  248. </li>
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  263. <h4>equal</h4>
    264. 

  264. <pre>public static&nbsp;boolean&nbsp;<a href="../../../src-html/org/jfree/data/DataUtilities.html#line.74">equal</a>(double[][]&nbsp;a,
    265. 

  265.                             double[][]&nbsp;b)</pre>
    266. 

  266. <div class="block">Tests two arrays for equality.  To be considered equal, the arrays must
    267. 

  267.  have exactly the same dimensions, and the values in each array must also
    268. 

  268.  match (two values that qre both NaN or both INF are considered equal
    269. 

  269.  in this test).</div>
    270. 

  270. <dl>
    271. 

  271. <dt><span class="paramLabel">Parameters:</span></dt>
    272. 

  272. <dd><code>a</code> - the first array (<code>null</code> permitted).</dd>
    273. 

  273. <dd><code>b</code> - the second array (<code>null</code> permitted).</dd>
    274. 

  274. <dt><span class="returnLabel">Returns:</span></dt>
    275. 

  275. <dd>A boolean.</dd>
    276. 

  276. <dt><span class="simpleTagLabel">Since:</span></dt>
    277. 

  277. <dd>1.0.13</dd>
    278. 

  278. </dl>
    279. 

  279. </li>
    280. 

  280. </ul>
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  286. <h4>clone</h4>
    287. 

  287. <pre>public static&nbsp;double[][]&nbsp;<a href="../../../src-html/org/jfree/data/DataUtilities.html#line.101">clone</a>(double[][]&nbsp;source)</pre>
    288. 

  288. <div class="block">Returns a clone of the specified array.</div>
    289. 

  289. <dl>
    290. 

  290. <dt><span class="paramLabel">Parameters:</span></dt>
    291. 

  291. <dd><code>source</code> - the source array (<code>null</code> not permitted).</dd>
    292. 

  292. <dt><span class="returnLabel">Returns:</span></dt>
    293. 

  293. <dd>A clone of the array.</dd>
    294. 

  294. <dt><span class="simpleTagLabel">Since:</span></dt>
    295. 

  295. <dd>1.0.13</dd>
    296. 

  296. </dl>
    297. 

  297. </li>
    298. 

  298. </ul>
    299. 

  299. <a name="calculateColumnTotal-org.jfree.data.Values2D-int-">
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  304. <h4>calculateColumnTotal</h4>
    305. 

  305. <pre>public static&nbsp;double&nbsp;<a href="../../../src-html/org/jfree/data/DataUtilities.html#line.123">calculateColumnTotal</a>(<a href="../../../org/jfree/data/Values2D.html" title="interface in org.jfree.data">Values2D</a>&nbsp;data,
    306. 

  306.                                           int&nbsp;column)</pre>
    307. 

  307. <div class="block">Returns the total of the values in one column of the supplied data
    308. 

  308.  table.</div>
    309. 

  309. <dl>
    310. 

  310. <dt><span class="paramLabel">Parameters:</span></dt>
    311. 

  311. <dd><code>data</code> - the table of values (<code>null</code> not permitted).</dd>
    312. 

  312. <dd><code>column</code> - the column index (zero-based).</dd>
    313. 

  313. <dt><span class="returnLabel">Returns:</span></dt>
    314. 

  314. <dd>The total of the values in the specified column.</dd>
    315. 

  315. </dl>
    316. 

  316. </li>
    317. 

  317. </ul>
    318. 

  318. <a name="calculateColumnTotal-org.jfree.data.Values2D-int-int:A-">
    319. 

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    320. 

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    321. 

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    322. 

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    323. 

  323. <h4>calculateColumnTotal</h4>
    324. 

  324. <pre>public static&nbsp;double&nbsp;<a href="../../../src-html/org/jfree/data/DataUtilities.html#line.148">calculateColumnTotal</a>(<a href="../../../org/jfree/data/Values2D.html" title="interface in org.jfree.data">Values2D</a>&nbsp;data,
    325. 

  325.                                           int&nbsp;column,
    326. 

  326.                                           int[]&nbsp;validRows)</pre>
    327. 

  327. <div class="block">Returns the total of the values in one column of the supplied data
    328. 

  328.  table by taking only the row numbers in the array into account.</div>
    329. 

  329. <dl>
    330. 

  330. <dt><span class="paramLabel">Parameters:</span></dt>
    331. 

  331. <dd><code>data</code> - the table of values (<code>null</code> not permitted).</dd>
    332. 

  332. <dd><code>column</code> - the column index (zero-based).</dd>
    333. 

  333. <dd><code>validRows</code> - the array with valid rows (zero-based).</dd>
    334. 

  334. <dt><span class="returnLabel">Returns:</span></dt>
    335. 

  335. <dd>The total of the valid values in the specified column.</dd>
    336. 

  336. <dt><span class="simpleTagLabel">Since:</span></dt>
    337. 

  337. <dd>1.0.13</dd>
    338. 

  338. </dl>
    339. 

  339. </li>
    340. 

  340. </ul>
    341. 

  341. <a name="calculateRowTotal-org.jfree.data.Values2D-int-">
    342. 

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    343. 

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    344. 

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    345. 

  345. <li class="blockList">
    346. 

  346. <h4>calculateRowTotal</h4>
    347. 

  347. <pre>public static&nbsp;double&nbsp;<a href="../../../src-html/org/jfree/data/DataUtilities.html#line.174">calculateRowTotal</a>(<a href="../../../org/jfree/data/Values2D.html" title="interface in org.jfree.data">Values2D</a>&nbsp;data,
    348. 

  348.                                        int&nbsp;row)</pre>
    349. 

  349. <div class="block">Returns the total of the values in one row of the supplied data
    350. 

  350.  table.</div>
    351. 

  351. <dl>
    352. 

  352. <dt><span class="paramLabel">Parameters:</span></dt>
    353. 

  353. <dd><code>data</code> - the table of values (<code>null</code> not permitted).</dd>
    354. 

  354. <dd><code>row</code> - the row index (zero-based).</dd>
    355. 

  355. <dt><span class="returnLabel">Returns:</span></dt>
    356. 

  356. <dd>The total of the values in the specified row.</dd>
    357. 

  357. </dl>
    358. 

  358. </li>
    359. 

  359. </ul>
    360. 

  360. <a name="calculateRowTotal-org.jfree.data.Values2D-int-int:A-">
    361. 

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    362. 

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    363. 

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    364. 

  364. <li class="blockList">
    365. 

  365. <h4>calculateRowTotal</h4>
    366. 

  366. <pre>public static&nbsp;double&nbsp;<a href="../../../src-html/org/jfree/data/DataUtilities.html#line.199">calculateRowTotal</a>(<a href="../../../org/jfree/data/Values2D.html" title="interface in org.jfree.data">Values2D</a>&nbsp;data,
    367. 

  367.                                        int&nbsp;row,
    368. 

  368.                                        int[]&nbsp;validCols)</pre>
    369. 

  369. <div class="block">Returns the total of the values in one row of the supplied data
    370. 

  370.  table by taking only the column numbers in the array into account.</div>
    371. 

  371. <dl>
    372. 

  372. <dt><span class="paramLabel">Parameters:</span></dt>
    373. 

  373. <dd><code>data</code> - the table of values (<code>null</code> not permitted).</dd>
    374. 

  374. <dd><code>row</code> - the row index (zero-based).</dd>
    375. 

  375. <dd><code>validCols</code> - the array with valid cols (zero-based).</dd>
    376. 

  376. <dt><span class="returnLabel">Returns:</span></dt>
    377. 

  377. <dd>The total of the valid values in the specified row.</dd>
    378. 

  378. <dt><span class="simpleTagLabel">Since:</span></dt>
    379. 

  379. <dd>1.0.13</dd>
    380. 

  380. </dl>
    381. 

  381. </li>
    382. 

  382. </ul>
    383. 

  383. <a name="createNumberArray-double:A-">
    384. 

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    385. 

  385. </a>
    386. 

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    387. 

  387. <li class="blockList">
    388. 

  388. <h4>createNumberArray</h4>
    389. 

  389. <pre>public static&nbsp;java.lang.Number[]&nbsp;<a href="../../../src-html/org/jfree/data/DataUtilities.html#line.224">createNumberArray</a>(double[]&nbsp;data)</pre>
    390. 

  390. <div class="block">Constructs an array of <code>Number</code> objects from an array of
    391. 

  391.  <code>double</code> primitives.</div>
    392. 

  392. <dl>
    393. 

  393. <dt><span class="paramLabel">Parameters:</span></dt>
    394. 

  394. <dd><code>data</code> - the data (<code>null</code> not permitted).</dd>
    395. 

  395. <dt><span class="returnLabel">Returns:</span></dt>
    396. 

  396. <dd>An array of <code>Double</code>.</dd>
    397. 

  397. </dl>
    398. 

  398. </li>
    399. 

  399. </ul>
    400. 

  400. <a name="createNumberArray2D-double:A:A-">
    401. 

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    402. 

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    404. 

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    405. 

  405. <h4>createNumberArray2D</h4>
    406. 

  406. <pre>public static&nbsp;java.lang.Number[][]&nbsp;<a href="../../../src-html/org/jfree/data/DataUtilities.html#line.241">createNumberArray2D</a>(double[][]&nbsp;data)</pre>
    407. 

  407. <div class="block">Constructs an array of arrays of <code>Number</code> objects from a
    408. 

  408.  corresponding structure containing <code>double</code> primitives.</div>
    409. 

  409. <dl>
    410. 

  410. <dt><span class="paramLabel">Parameters:</span></dt>
    411. 

  411. <dd><code>data</code> - the data (<code>null</code> not permitted).</dd>
    412. 

  412. <dt><span class="returnLabel">Returns:</span></dt>
    413. 

  413. <dd>An array of <code>Double</code>.</dd>
    414. 

  414. </dl>
    415. 

  415. </li>
    416. 

  416. </ul>
    417. 

  417. <a name="getCumulativePercentages-org.jfree.data.KeyedValues-">
    418. 

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    419. 

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    420. 

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    421. 

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    422. 

  422. <h4>getCumulativePercentages</h4>
    423. 

  423. <pre>public static&nbsp;<a href="../../../org/jfree/data/KeyedValues.html" title="interface in org.jfree.data">KeyedValues</a>&nbsp;<a href="../../../src-html/org/jfree/data/DataUtilities.html#line.261">getCumulativePercentages</a>(<a href="../../../org/jfree/data/KeyedValues.html" title="interface in org.jfree.data">KeyedValues</a>&nbsp;data)</pre>
    424. 

  424. <div class="block">Returns a <a href="../../../org/jfree/data/KeyedValues.html" title="interface in org.jfree.data"><code>KeyedValues</code></a> instance that contains the cumulative
    425. 

  425.  percentage values for the data in another <a href="../../../org/jfree/data/KeyedValues.html" title="interface in org.jfree.data"><code>KeyedValues</code></a> instance.
    426. 

  426.  <p>
    427. 

  427.  The percentages are values between 0.0 and 1.0 (where 1.0 = 100%).</div>
    428. 

  428. <dl>
    429. 

  429. <dt><span class="paramLabel">Parameters:</span></dt>
    430. 

  430. <dd><code>data</code> - the data (<code>null</code> not permitted).</dd>
    431. 

  431. <dt><span class="returnLabel">Returns:</span></dt>
    432. 

  432. <dd>The cumulative percentages.</dd>
    433. 

  433. </dl>
    434. 

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    435. 

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    436. 

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