Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/exports/ChartGenerator.java @ 9123:1cc7653ca84f

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Cleanup of ChartGenerator and ChartGenerator2 code. Put some of the copy/pasted code into a common abstraction.
author gernotbelger
date Tue, 05 Jun 2018 19:21:16 +0200
parents 07d51fd4864c
children
rev   line source
5863
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
diff changeset
1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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2 * Software engineering by Intevation GmbH
4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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3 *
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Sascha L. Teichmann <teichmann@intevation.de>
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4 * This file is Free Software under the GNU AGPL (>=v3)
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5867
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6 * documentation coming with Dive4Elements River for details.
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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7 */
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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8
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 4858
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9 package org.dive4elements.river.exports;
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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10
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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11 import java.awt.Font;
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12 import java.io.IOException;
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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13 import java.io.OutputStream;
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 3250
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14 import java.util.ArrayList;
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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15 import java.util.List;
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parents: 3250
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16
9123
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gernotbelger
parents: 9104
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17 import org.dive4elements.artifactdatabase.state.ArtifactAndFacet;
1cc7653ca84f Cleanup of ChartGenerator and ChartGenerator2 code. Put some of the copy/pasted code into a common abstraction.
gernotbelger
parents: 9104
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18 import org.dive4elements.artifacts.CallContext;
1cc7653ca84f Cleanup of ChartGenerator and ChartGenerator2 code. Put some of the copy/pasted code into a common abstraction.
gernotbelger
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19 import org.dive4elements.river.jfree.RiverAnnotation;
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gernotbelger
parents: 9104
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20 import org.dive4elements.river.themes.ThemeDocument;
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21 import org.jfree.chart.axis.NumberAxis;
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 3250
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22 import org.jfree.data.Range;
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23
635af5381a4d Added an abstract OutGenerator that should be the base class for all generators which create charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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24 /**
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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25 * The base class for chart creation. It should provide some basic things that
635af5381a4d Added an abstract OutGenerator that should be the base class for all generators which create charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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26 * equal in all chart types.
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27 *
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parents: 5863
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28 * Annotations are added as RiverAnnotations and come in mutliple basic forms:
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Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4236
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29 * TextAnnotations are labels somewhere in data space, StickyAnnotations are
0aa42c9d58e9 Documentation in ChartGenerator added.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4236
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30 * labels of a slice or line in one data dimension (i.e. visualized as label
0aa42c9d58e9 Documentation in ChartGenerator added.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 4236
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31 * on a single axis).
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32 *
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33 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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34 */
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gernotbelger
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35 public abstract class ChartGenerator extends AbstractChartGenerator {
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36
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2141
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37 /**
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parents: 2141
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38 * A mini interface that allows to walk over the YAXIS enums defined in
958a10e2e246 Added a new ChartGenerator for timeseries charts and refactored some code in XYChartGenerator.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2141
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39 * subclasses.
958a10e2e246 Added a new ChartGenerator for timeseries charts and refactored some code in XYChartGenerator.
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parents: 2141
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40 */
958a10e2e246 Added a new ChartGenerator for timeseries charts and refactored some code in XYChartGenerator.
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parents: 2141
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41 public interface YAxisWalker {
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parents: 2236
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42
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parents: 2141
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43 int length();
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parents: 2236
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44
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45 String getId(int idx);
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2236
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46 } // end of YAxisWalker interface
23c7c51df772 Some more refactoring in XYChartGenerator and ChartGenerator; implemented necessary stuff in TimeseriesChartGenerator and return new empty instances of timeseries charts.
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parents: 2236
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47
23c7c51df772 Some more refactoring in XYChartGenerator and ChartGenerator; implemented necessary stuff in TimeseriesChartGenerator and return new empty instances of timeseries charts.
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parents: 2236
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48
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parents: 2141
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49 protected abstract YAxisWalker getYAxisWalker();
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50
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51 /**
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Christian Lins <christian.lins@intevation.de>
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52 * Register annotations like MainValues for later plotting
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Christian Lins <christian.lins@intevation.de>
parents: 3227
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53 *
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Christian Lins <christian.lins@intevation.de>
parents: 3227
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54 * @param annotations list of annotations (data of facet).
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Christian Lins <christian.lins@intevation.de>
parents: 3227
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55 * @param aandf Artifact and the facet.
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56 * @param theme Theme document for given annotations.
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Christian Lins <christian.lins@intevation.de>
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57 * @param visible The visibility of the annotations.
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58 */
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59 public void doAnnotations(
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60 RiverAnnotation annotations,
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61 ArtifactAndFacet aandf,
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62 ThemeDocument theme,
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63 boolean visible
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parents: 3227
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64 ){
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Sascha L. Teichmann <teichmann@intevation.de>
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65 log.debug("doAnnotations");
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66
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67 // Add all annotations to our annotation pool.
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68 annotations.setTheme(theme);
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69 if (aandf != null) {
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70 annotations.setLabel(aandf.getFacetDescription());
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71 }
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72 else {
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73 log.error(
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74 "Art/Facet for Annotations is null. " +
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75 "This should never happen!");
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76 }
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77
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78 if (visible) {
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79 addAnnotations(annotations);
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80 }
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81 }
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82
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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83 @Override
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gernotbelger
parents: 9104
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84 protected void doGenerate(CallContext context, OutputStream out, String outName) throws IOException {
1cc7653ca84f Cleanup of ChartGenerator and ChartGenerator2 code. Put some of the copy/pasted code into a common abstraction.
gernotbelger
parents: 9104
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85 generateImage(context);
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 3409
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86 }
118fe1cc8cc8 OutGenerators got a setCollection() method; analogous to setMasterArtifact(). Registered the SQOverviewGenerator as OutGenerator for 'sq_overview' Output.
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parents: 3409
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87
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88 /**
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89 * Creates a new <i>ChartSection</i>.
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90 *
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parents: 2234
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91 * @return a new <i>ChartSection</i>.
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92 */
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gernotbelger
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93 @Override
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94 protected ChartSection buildChartSection(final CallContext context) {
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95 ChartSection chartSection = new ChartSection();
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gernotbelger
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96 chartSection.setTitle(getChartTitle(context));
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97 chartSection.setSubtitle(getChartSubtitle(context));
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98 chartSection.setDisplayGrid(isGridVisible());
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99 chartSection.setDisplayLogo(showLogo());
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100 chartSection.setLogoVPlacement(logoVPlace());
b7867c03760a Split logo placement property in two (vertical/horizontal).
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101 chartSection.setLogoHPlacement(logoHPlace());
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102 return chartSection;
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103 }
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104
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105 /**
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106 * Creates a list of Section for the chart's Y axes. This method makes use
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107 * of <i>getYAxisWalker</i> to be able to access all Y axes defined in
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parents: 2234
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108 * subclasses.
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109 *
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110 * @return a list of Y axis sections.
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111 */
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gernotbelger
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112 @Override
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113 protected final List<AxisSection> buildYAxisSections() {
1cc7653ca84f Cleanup of ChartGenerator and ChartGenerator2 code. Put some of the copy/pasted code into a common abstraction.
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114 List<AxisSection> axisSections = new ArrayList<>();
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115
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116 YAxisWalker walker = getYAxisWalker();
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117 for (int i = 0, n = walker.length(); i < n; i++) {
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118 AxisSection ySection = new AxisSection();
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119 ySection.setIdentifier(walker.getId(i));
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120 ySection.setLabel(getYAxisLabel(i));
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121 ySection.setFontSize(14);
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122 ySection.setFixed(false);
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123
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124 // XXX We are able to find better default ranges that [0,0], the
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125 // only problem is, that we do NOT have a better range than [0,0]
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126 // for each axis, because the initial chart will not have a dataset
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127 // for each axis set!
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128 ySection.setUpperRange(0d);
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129 ySection.setLowerRange(0d);
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130
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131 axisSections.add(ySection);
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132 }
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133
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134 return axisSections;
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135 }
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136
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137 /**
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138 * Returns the subtitle of a chart. The return value depends on the
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139 * existence of ChartSettings: if there are ChartSettings set, this method
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140 * returns the chart title provided by those settings. Otherwise, this
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141 * method returns getDefaultChartSubtitle().
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142 *
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143 * @return the subtitle of a chart.
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144 */
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145 @Override
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146 protected String getChartSubtitle(final CallContext context) {
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147 ChartSettings chartSettings = getChartSettings();
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148
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149 if (chartSettings != null)
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150 return getChartSubtitle(chartSettings);
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151
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152 return getDefaultChartSubtitle(context);
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153 }
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154
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155 /**
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156 * This method returns the font size for an Y axis. If the font size is
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157 * specified in ChartSettings (if <i>chartSettings</i> is set), this size is
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158 * returned. Otherwise the default font size 12 is returned.
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159 *
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160 * @return the font size for the x axis.
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161 */
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162 protected int getYAxisFontSize(int pos) {
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163 ChartSettings chartSettings = getChartSettings();
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164 if (chartSettings == null) {
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165 return DEFAULT_FONT_SIZE;
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166 }
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167
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168 YAxisWalker walker = getYAxisWalker();
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169
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170 AxisSection as = chartSettings.getAxisSection(walker.getId(pos));
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171 if (as == null) {
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172 return DEFAULT_FONT_SIZE;
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173 }
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174 Integer fontSize = as.getFontSize();
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175
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176 return fontSize != null ? fontSize : DEFAULT_FONT_SIZE;
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177 }
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178
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179 /**
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180 * Returns the Y-Axis label of a chart at position <i>pos</i>.
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181 *
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182 * @return the Y-Axis label of a chart at position <i>0</i>.
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183 */
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184 protected String getYAxisLabel(int pos) {
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185 ChartSettings chartSettings = getChartSettings();
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186 if (chartSettings == null) {
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187 return getDefaultYAxisLabel(pos);
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188 }
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189
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190 YAxisWalker walker = getYAxisWalker();
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191 AxisSection as = chartSettings.getAxisSection(walker.getId(pos));
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192 if (as != null) {
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193 String label = as.getLabel();
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194
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195 if (label != null) {
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196 return label;
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197 }
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198 }
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199
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200 return getDefaultYAxisLabel(pos);
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201 }
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202
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203 /**
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204 * This method is called to retrieve the default label for an Y axis at
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205 * position <i>pos</i>.
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206 *
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207 * @param pos
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208 * The position of an Y axis.
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209 *
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210 * @return the default Y axis label at position <i>pos</i>.
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211 */
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212 protected abstract String getDefaultYAxisLabel(int pos);
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213
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214 /**
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215 * This method searches for a specific axis in the <i>settings</i> if
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216 * <i>settings</i> is set. If the axis was found, this method returns the
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217 * specified axis range if the axis range is fixed. Otherwise, this method
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218 * returns null.
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219 *
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220 * @param axisId The identifier of an axis.
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221 *
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222 * @return the specified axis range from <i>settings</i> if the axis is
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223 * fixed, otherwise null.
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224 */
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225 public Range getRangeForAxisFromSettings(String axisId) {
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226 ChartSettings chartSettings = getChartSettings();
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227 if (chartSettings == null) {
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228 return null;
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229 }
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230
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231 AxisSection as = chartSettings.getAxisSection(axisId);
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232
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233 if (as == null) {
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234 return null;
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235 }
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236
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237 if (as.isFixed()) {
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238
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239 /* Only time series charts have time ranges so prefer those. */
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240 if (axisId.equals("X")) {
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241 Long lowerTime = as.getLowerTimeRange();
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242 Long upperTime = as.getUpperTimeRange();
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243 if ( lowerTime != null && upperTime != null ) {
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244 log.debug("Using time range: "
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245 + lowerTime + " - " + upperTime);
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246 return lowerTime < upperTime
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247 ? new Range(lowerTime, upperTime)
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248 : new Range(upperTime, lowerTime);
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249 }
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250 }
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251
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252 Double upper = as.getUpperRange();
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253 Double lower = as.getLowerRange();
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254
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255 if (upper != null && lower != null) {
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256 return lower < upper
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257 ? new Range(lower, upper)
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258 : new Range(upper, lower);
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259 }
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260 }
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261
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262 return null;
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263 }
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264
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265 /**
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266 * Creates a new instance of <i>IdentifiableNumberAxis</i>.
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267 *
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268 * @param idx The index of the new axis.
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269 * @param label The label of the new axis.
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270 *
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271 * @return an instance of IdentifiableNumberAxis.
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272 */
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273 protected final NumberAxis createNumberAxis(int idx, String label) {
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274 YAxisWalker walker = getYAxisWalker();
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275
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276 return new IdentifiableNumberAxis(walker.getId(idx), label);
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277 }
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278
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279 /**
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280 * Create Y (range) axis for given index.
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281 * Shall be overriden by subclasses.
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282 */
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283 @Override
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284 protected NumberAxis createYAxis(int index) {
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285 YAxisWalker walker = getYAxisWalker();
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286
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287 Font labelFont = new Font(
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288 DEFAULT_FONT_NAME,
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289 Font.BOLD,
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290 getYAxisFontSize(index));
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291
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292 IdentifiableNumberAxis axis = new IdentifiableNumberAxis(
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293 walker.getId(index),
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294 getYAxisLabel(index));
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295
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296 axis.setAutoRangeIncludesZero(false);
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297 axis.setLabelFont(labelFont);
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d75b427da50a #522 Modified axes creation: label and tick label fonts will now always be the same.
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parents: 2587
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298 axis.setTickLabelFont(labelFont);
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299
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gernotbelger
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300 // REMARK: we overwrite the default values to 0.0, because in earlier version margins were never applied.
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301 axis.setLowerMargin(0);
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302 axis.setUpperMargin(0);
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303
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304 return axis;
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305 }
348
635af5381a4d Added an abstract OutGenerator that should be the base class for all generators which create charts.
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parents:
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306 }
635af5381a4d Added an abstract OutGenerator that should be the base class for all generators which create charts.
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parents:
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307 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org