Mercurial > dive4elements > gnv-client
comparison gnv-artifacts/src/main/java/de/intevation/gnv/chart/DefaultHistogram.java @ 617:3d13fa281a7e
Added new ouput mode: histogram.
gnv-artifacts/trunk@688 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Mon, 15 Feb 2010 11:44:01 +0000 |
| parents | |
| children | 65f09139e9b3 |
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| 616:93978859fa9e | 617:3d13fa281a7e |
|---|---|
| 1 package de.intevation.gnv.chart; | |
| 2 | |
| 3 import java.util.Locale; | |
| 4 | |
| 5 import org.apache.log4j.Logger; | |
| 6 | |
| 7 import org.jfree.chart.ChartTheme; | |
| 8 import org.jfree.chart.JFreeChart; | |
| 9 import org.jfree.chart.axis.NumberAxis; | |
| 10 import org.jfree.chart.plot.XYPlot; | |
| 11 import org.jfree.chart.renderer.xy.XYBarRenderer; | |
| 12 | |
| 13 import org.jfree.data.general.Dataset; | |
| 14 import org.jfree.data.statistics.HistogramDataset; | |
| 15 | |
| 16 | |
| 17 /** | |
| 18 * @author Ingo Weinzierl (ingo.weinzierl@intevation.de) | |
| 19 */ | |
| 20 public class DefaultHistogram | |
| 21 extends AbstractHistogram | |
| 22 { | |
| 23 // TODO take a better default value | |
| 24 public static final int DEFAULT_BINS = 15; | |
| 25 | |
| 26 private static Logger logger = Logger.getLogger(DefaultHistogram.class); | |
| 27 | |
| 28 | |
| 29 public DefaultHistogram( | |
| 30 ChartLabels labels, Object[] data, ChartTheme theme | |
| 31 ) { | |
| 32 super(labels, data, theme); | |
| 33 } | |
| 34 | |
| 35 | |
| 36 protected void applyDatasets() { | |
| 37 XYPlot plot = (XYPlot) chart.getPlot(); | |
| 38 | |
| 39 // prepare data and create add them to histogram dataset | |
| 40 String name = (String) data[0]; | |
| 41 double[] values = toDouble((Double[]) data[1]); | |
| 42 | |
| 43 HistogramDataset dataset = new HistogramDataset(); | |
| 44 dataset.addSeries(name, values, DEFAULT_BINS); | |
| 45 | |
| 46 plot.setDataset(0, dataset); | |
| 47 } | |
| 48 | |
| 49 | |
| 50 protected double[] toDouble(Double[] array) { | |
| 51 int length = array.length; | |
| 52 double[] values = new double[length]; | |
| 53 | |
| 54 for(int i = 0; i < length; i++) { | |
| 55 values[i] = array[i].doubleValue(); | |
| 56 } | |
| 57 | |
| 58 return values; | |
| 59 } | |
| 60 } | |
| 61 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |