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> |
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date | Mon, 15 Feb 2010 11:44:01 +0000 |
parents | |
children | 65f09139e9b3 |
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616:93978859fa9e | 617:3d13fa281a7e |
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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 : |