Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/chart/DefaultHistogram.java @ 623:65f09139e9b3

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Fixed file handle leak when writing meta data. gnv-artifacts/trunk@694 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sun, 21 Feb 2010 21:05:55 +0000
parents 3d13fa281a7e
children d08b9ba148c5
rev   line source
617
3d13fa281a7e Added new ouput mode: histogram.
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1 package de.intevation.gnv.chart;
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2
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3 import org.apache.log4j.Logger;
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4
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5 import org.jfree.chart.ChartTheme;
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6
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7 import org.jfree.chart.plot.XYPlot;
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8
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9 import org.jfree.data.statistics.HistogramDataset;
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10
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11 /**
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12 * @author Ingo Weinzierl (ingo.weinzierl@intevation.de)
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13 */
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14 public class DefaultHistogram
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15 extends AbstractHistogram
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16 {
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17 // TODO take a better default value
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18 public static final int DEFAULT_BINS = 15;
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19
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20 private static Logger logger = Logger.getLogger(DefaultHistogram.class);
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21
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22
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23 public DefaultHistogram(
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24 ChartLabels labels, Object[] data, ChartTheme theme
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25 ) {
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26 super(labels, data, theme);
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27 }
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28
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29
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30 protected void applyDatasets() {
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31 XYPlot plot = (XYPlot) chart.getPlot();
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32
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33 // prepare data and create add them to histogram dataset
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34 String name = (String) data[0];
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35 double[] values = toDouble((Double[]) data[1]);
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36
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37 HistogramDataset dataset = new HistogramDataset();
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38 dataset.addSeries(name, values, DEFAULT_BINS);
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39
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40 plot.setDataset(0, dataset);
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41 }
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42
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43
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44 protected double[] toDouble(Double[] array) {
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45 int length = array.length;
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46 double[] values = new double[length];
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47
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48 for(int i = 0; i < length; i++) {
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49 values[i] = array[i].doubleValue();
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50 }
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51
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52 return values;
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53 }
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54 }
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55 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org