Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/chart/AbstractXYLineChart.java @ 304:a16d337c5678

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The style of charts can be configured with ChartThemes using XML configuration files. gnv-artifacts/trunk@362 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 23 Nov 2009 17:01:28 +0000
parents 3ea030aafe65
children f0f106c7b906
rev   line source
297
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1 package de.intevation.gnv.chart;
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2
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3 import java.awt.Color;
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4 import java.util.Collection;
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5 import java.util.Iterator;
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6
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7 import org.apache.log4j.Logger;
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8
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9 import org.jfree.chart.JFreeChart;
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10 import org.jfree.chart.ChartFactory;
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11 import org.jfree.chart.axis.NumberAxis;
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12 import org.jfree.chart.axis.NumberTickUnit;
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13 import org.jfree.chart.axis.AxisLocation;
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14 import org.jfree.chart.plot.PlotOrientation;
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15 import org.jfree.chart.plot.XYPlot;
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16 import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
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17 import org.jfree.data.general.Series;
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18
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19 import de.intevation.gnv.geobackend.base.Result;
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20 import de.intevation.gnv.transition.describedata.KeyValueDescibeData;
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21
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22 /**
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23 * @author Ingo Weinzierl <ingo.weinzierl@intevation.de>
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24 */
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25 public abstract class AbstractXYLineChart
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26 extends AbstractChart
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27 {
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28 private static Logger log = Logger.getLogger(AbstractXYLineChart.class);
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29
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30 protected static Color[] COLOR = {
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31 Color.black, Color.red, Color.green, Color.blue
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32 };
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33
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34 protected PlotOrientation PLOT_ORIENTATION = PlotOrientation.VERTICAL;
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35
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36 protected abstract void initData();
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37 protected abstract void addValue(Result row, Series series);
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38 protected abstract void addSeries(Series series, int idx);
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39 protected abstract String createSeriesName(
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40 String breakPoint1,
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41 String breakPoint2,
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42 String breakPoint3
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43 );
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44
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45
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46 public JFreeChart generateChart() {
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47 log.debug("generate XYLineChart");
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48
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49 if (chart != null)
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50 return chart;
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51
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52 chart = ChartFactory.createXYLineChart(
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53 labels.getTitle(),
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54 labels.getDomainAxisLabel(),
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55 null,
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56 null,
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57 PLOT_ORIENTATION,
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58 true,
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59 false,
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60 false
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61 );
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62
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63 theme.apply(chart);
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64 initData();
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a16d337c5678 The style of charts can be configured with ChartThemes using XML configuration files.
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65
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66 return chart;
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67 }
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68
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69
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70 protected void prepareAxis(String seriesKey, int idx) {
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71 log.debug("prepare axis of xychart");
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72 XYPlot plot = chart.getXYPlot();
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73 NumberAxis axis = new NumberAxis(seriesKey);
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74
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75 if (seriesKey.contains("richtung")) {
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76 axis.setTickUnit(new NumberTickUnit(30.0));
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77 axis.setUpperBound(360.0);
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78 axis.setLowerBound(0.0);
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79 plot.setRangeAxis(idx, axis);
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80 }
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81 else {
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82 axis.setFixedDimension(10.0);
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83 axis.setAutoRangeIncludesZero(false);
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84 plot.setRangeAxis(idx, axis);
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85 axis.configure();
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86 }
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87
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88 if (idx % 2 != 0)
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89 plot.setRangeAxisLocation(idx, AxisLocation.BOTTOM_OR_RIGHT);
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90 else
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91 plot.setRangeAxisLocation(idx, AxisLocation.BOTTOM_OR_LEFT);
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92 plot.mapDatasetToRangeAxis(idx, idx);
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93
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94 StandardXYItemRenderer renderer = new StandardXYItemRenderer();
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95 renderer.setSeriesPaint(idx, COLOR[idx%COLOR.length]);
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96 plot.setRenderer(idx, renderer);
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97 }
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98
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99
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100 protected String findValueTitle(Collection values, String id) {
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101 log.debug("find description of dataset");
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102
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103 Iterator it = values.iterator();
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104 while (it.hasNext()) {
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105 KeyValueDescibeData data = (KeyValueDescibeData) it.next();
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106
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107 if (id.equals(data.getKey()))
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108 return data.getValue();
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109 }
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110 return "";
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111 }
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112 }
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113 // vim:set ts=4 sw=4 si et sta sts=4 fenc=latin1 :
http://dive4elements.wald.intevation.org