Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/chart/AbstractHistogram.java @ 617:3d13fa281a7e

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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
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children 65f09139e9b3
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 java.util.Locale;
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4
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5 import org.apache.log4j.Logger;
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6
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7 import org.jfree.chart.ChartFactory;
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8 import org.jfree.chart.ChartTheme;
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9 import org.jfree.chart.JFreeChart;
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10
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11 import org.jfree.chart.axis.NumberAxis;
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12 import org.jfree.chart.plot.PlotOrientation;
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13 import org.jfree.chart.plot.XYPlot;
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14 import org.jfree.chart.renderer.xy.XYBarRenderer;
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15
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16 import org.jfree.data.statistics.HistogramDataset;
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17
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18
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19 /**
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20 * @author Ingo Weinzierl (ingo.weinzierl@intevation.de)
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21 */
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22 public abstract class AbstractHistogram
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23 implements Chart
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24 {
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25 private Logger logger = Logger.getLogger(AbstractHistogram.class);
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26
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27 protected JFreeChart chart;
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28 protected ChartLabels labels;
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29 protected ChartTheme theme;
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30 protected Object[] data;
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31
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32 protected Locale locale;
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33
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34
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35 public AbstractHistogram(
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36 ChartLabels labels, Object[] data, ChartTheme theme
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37 ) {
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38 this.labels = labels;
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39 this.data = data;
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40 this.theme = theme;
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41 }
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42
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43
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44 public JFreeChart generateChart() {
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45
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46 if (chart != null)
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47 return chart;
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48
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49 chart = ChartFactory.createHistogram(
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50 labels.getTitle(),
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51 labels.getDomainAxisLabel(),
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52 labels.getRangeAxisLabel(),
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53 null,
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54 PlotOrientation.VERTICAL,
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55 true,
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56 false,
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57 false);
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58
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59 applyDatasets();
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60
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61 theme.apply(chart);
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62 adjustPlot();
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63
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64 return chart;
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65 }
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66
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67
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68 protected void adjustPlot() {
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69 XYPlot plot = (XYPlot) chart.getPlot();
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70 XYBarRenderer renderer = (XYBarRenderer) plot.getRenderer();
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71
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72 renderer.setShadowVisible(false);
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73 renderer.setSeriesVisibleInLegend(0, false);
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74 }
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75
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76
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77 protected abstract void applyDatasets();
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78 }
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79 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org