Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/exports/XYChartGenerator.java @ 1679:69929c471646
Improved the creation/rendering of annotations (km favorites, mainvalues).
flys-artifacts/trunk@2896 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Wed, 05 Oct 2011 14:23:53 +0000 |
parents | 4a8251eae217 |
children | bdb05dc9b763 |
rev | line source |
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369
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Implemented the chart creation of a longitudinal section chart - W and Q facets.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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1 package de.intevation.flys.exports; |
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2 |
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Display gridlines in charts.
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3 import java.awt.BasicStroke; |
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4 import java.awt.Color; |
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5 import java.awt.Stroke; |
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6 |
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7 import java.io.IOException; |
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8 |
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Bugfix: #68 Set number format of chart plot axes based on the CallMeta instance for each request.
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9 import java.text.NumberFormat; |
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Bugfix: #68 Set number format of chart plot axes based on the CallMeta instance for each request.
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10 |
1679
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11 import java.util.ArrayList; |
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12 import java.util.List; |
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13 |
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14 import org.w3c.dom.Document; |
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15 |
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16 import org.apache.log4j.Logger; |
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17 |
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18 import org.jfree.chart.ChartFactory; |
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19 import org.jfree.chart.JFreeChart; |
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20 import org.jfree.chart.LegendItem; |
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21 import org.jfree.chart.LegendItemCollection; |
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22 import org.jfree.chart.annotations.XYTextAnnotation; |
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23 import org.jfree.chart.axis.NumberAxis; |
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Charts are zoomed to a specified view if the attribute document for the chart creation contains an x and/or y range.
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24 import org.jfree.chart.axis.ValueAxis; |
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25 import org.jfree.chart.plot.PlotOrientation; |
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26 import org.jfree.chart.plot.XYPlot; |
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27 import org.jfree.chart.renderer.xy.XYItemRenderer; |
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An initial implementation to render chart series based on the XML configuration in themes.xml.
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28 import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; |
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29 import org.jfree.data.Range; |
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#90 Removed margins between data area border and curves.
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30 import org.jfree.data.xy.XYDataset; |
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31 import org.jfree.data.xy.XYSeries; |
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32 import org.jfree.data.xy.XYSeriesCollection; |
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33 |
bbc966c81809
#90 Removed margins between data area border and curves.
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parents:
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34 import org.jfree.ui.RectangleInsets; |
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35 |
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36 import de.intevation.flys.exports.ChartExportHelper; |
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37 import de.intevation.flys.jfree.FLYSAnnotation; |
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38 import de.intevation.flys.utils.ThemeUtil; |
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39 |
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40 |
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41 /** |
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42 * An abstract base class for creating XY charts. |
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43 * |
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44 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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45 */ |
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46 public abstract class XYChartGenerator extends ChartGenerator { |
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47 |
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48 /** The logger that is used in this generator. */ |
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49 private static Logger logger = Logger.getLogger(XYChartGenerator.class); |
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50 |
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51 |
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Picky white-space cosmetics.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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52 /** SeriesCollection used for the first axis. */ |
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53 protected XYSeriesCollection first; |
7ca4a287cd0e
#135 Modified the way to store datasets for different chart axes.
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parents:
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54 |
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Picky white-space cosmetics.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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55 /** SeriesCollection used for the second axis. */ |
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56 protected XYSeriesCollection second; |
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parents:
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57 |
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58 /** List of annotations to insert in plot. */ |
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59 protected List<FLYSAnnotation> annotations; |
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60 |
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61 |
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Display gridlines in charts.
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62 public static final Color DEFAULT_GRID_COLOR = Color.GRAY; |
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Display gridlines in charts.
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63 public static final float DEFAULT_GRID_LINE_WIDTH = 0.3f; |
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Display gridlines in charts.
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64 |
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Display gridlines in charts.
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parents:
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65 |
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66 /** |
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67 * Returns the title of a chart. |
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68 * |
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69 * @return the title of a chart. |
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70 */ |
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71 protected abstract String getChartTitle(); |
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72 |
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73 /** |
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74 * Returns the X-Axis label of a chart. |
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75 * |
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76 * @return the X-Axis label of a chart. |
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77 */ |
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78 protected abstract String getXAxisLabel(); |
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79 |
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80 /** |
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81 * Returns the Y-Axis label of a chart. |
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82 * |
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83 * @return the Y-Axis label of a chart. |
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84 */ |
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85 protected abstract String getYAxisLabel(); |
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86 |
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87 |
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88 public void generate() |
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89 throws IOException |
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90 { |
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91 logger.debug("XYChartGenerator.generate"); |
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92 |
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93 JFreeChart chart = generateChart(); |
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parents:
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94 |
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95 int[] size = getSize(); |
67c7020f4ed3
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parents:
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96 |
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97 ChartExportHelper.exportImage( |
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parents:
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98 out, |
67c7020f4ed3
Refactored the chart creation in the ChartInfoGenerators. Now, every chart is created by the XYChartGenerator again.
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parents:
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99 chart, |
67c7020f4ed3
Refactored the chart creation in the ChartInfoGenerators. Now, every chart is created by the XYChartGenerator again.
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parents:
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100 "png", |
67c7020f4ed3
Refactored the chart creation in the ChartInfoGenerators. Now, every chart is created by the XYChartGenerator again.
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parents:
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101 size[0], size[1]); |
67c7020f4ed3
Refactored the chart creation in the ChartInfoGenerators. Now, every chart is created by the XYChartGenerator again.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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102 } |
67c7020f4ed3
Refactored the chart creation in the ChartInfoGenerators. Now, every chart is created by the XYChartGenerator again.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
652
diff
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103 |
67c7020f4ed3
Refactored the chart creation in the ChartInfoGenerators. Now, every chart is created by the XYChartGenerator again.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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diff
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104 |
67c7020f4ed3
Refactored the chart creation in the ChartInfoGenerators. Now, every chart is created by the XYChartGenerator again.
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parents:
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105 public JFreeChart generateChart() { |
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106 logger.debug("XYChartGenerator.generateChart"); |
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107 |
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108 JFreeChart chart = ChartFactory.createXYLineChart( |
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109 getChartTitle(), |
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110 getXAxisLabel(), |
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111 getYAxisLabel(), |
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112 null, |
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113 PlotOrientation.VERTICAL, |
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114 true, |
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115 false, |
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116 false); |
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117 |
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118 chart.setBackgroundPaint(Color.WHITE); |
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119 chart.getPlot().setBackgroundPaint(Color.WHITE); |
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120 |
419
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121 XYPlot plot = (XYPlot) chart.getPlot(); |
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122 |
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123 addDatasets(plot); |
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124 addAnnotations(plot); |
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125 addSubtitles(chart); |
419
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126 adjustPlot(plot); |
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127 adjustAxes(plot); |
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128 localizeAxes(plot); |
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129 |
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130 removeEmptyRangeAxes(plot); |
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131 |
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132 autoZoom(plot); |
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133 |
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134 applyThemes(plot); |
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135 |
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136 return chart; |
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137 } |
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138 |
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139 |
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140 protected void addDatasets(XYPlot plot) { |
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141 if (first != null) { |
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142 logger.debug("Set the first axis dataset."); |
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143 plot.setDataset(0, first); |
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144 } |
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145 if (second != null) { |
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146 logger.debug("Set the second axis dataset."); |
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147 plot.setDataset(1, second); |
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148 } |
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149 } |
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150 |
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151 |
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152 public void addFirstAxisSeries(XYSeries series) { |
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153 if (first == null) { |
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154 first = new XYSeriesCollection(); |
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155 } |
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156 |
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157 if (series != null) { |
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158 first.addSeries(series); |
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159 } |
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160 } |
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161 |
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162 |
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163 public void addSecondAxisSeries(XYSeries series) { |
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164 if (second == null) { |
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165 second = new XYSeriesCollection(); |
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166 } |
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167 |
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168 if (series != null) { |
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169 second.addSeries(series); |
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170 } |
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171 } |
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172 |
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173 |
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174 public void addAnnotations(FLYSAnnotation annotation) { |
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175 if (annotations == null) { |
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176 annotations = new ArrayList<FLYSAnnotation>(); |
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177 } |
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178 |
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179 annotations.add(annotation); |
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180 } |
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181 |
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182 |
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183 private void removeEmptyRangeAxes(XYPlot plot) { |
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184 if (first == null) { |
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185 plot.setRangeAxis(0, null); |
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186 } |
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187 |
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188 if (second == null) { |
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189 plot.setRangeAxis(1, null); |
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190 } |
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191 } |
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192 |
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193 |
653
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194 /** |
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195 * This method zooms the plot to the specified ranges in the attribute |
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196 * document or to the ranges specified by the min/max values in the |
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197 * datasets. <b>Note:</b> We determine the range manually if no zoom ranges |
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198 * are given, because JFreeCharts auto-zoom adds a margin to the left and |
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199 * right of the data area. |
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200 * |
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201 * @param plot The XYPlot. |
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202 */ |
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203 protected void autoZoom(XYPlot plot) { |
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204 logger.debug("Zoom to specified ranges."); |
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205 |
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206 Range xrange = getDomainAxisRange(); |
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207 Range yrange = getValueAxisRange(); |
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208 |
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209 for (int i = 0, num = plot.getDatasetCount(); i < num; i++) { |
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210 XYDataset dataset = plot.getDataset(i); |
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211 |
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212 if (dataset == null) { |
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213 continue; |
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214 } |
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215 |
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216 Range[] ranges = getRangesForDataset(dataset); |
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217 |
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218 if (i == 0) { |
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219 ValueAxis xaxis = plot.getDomainAxis(); |
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220 zoomX(plot, xaxis, ranges[0], xrange); |
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221 } |
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222 |
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223 ValueAxis yaxis = plot.getRangeAxis(i); |
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224 |
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225 if (yaxis == null) { |
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226 continue; |
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227 } |
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228 |
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229 zoomY(plot, yaxis, ranges[1], yrange); |
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230 } |
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231 } |
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232 |
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233 |
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234 protected boolean zoomX(XYPlot plot, ValueAxis axis, Range range, Range x) { |
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235 return zoom(plot, axis, range, x); |
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236 } |
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237 |
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238 |
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239 protected boolean zoomY(XYPlot plot, ValueAxis axis, Range range, Range x) { |
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240 return zoom(plot, axis, range, x); |
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241 } |
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242 |
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243 |
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244 /** |
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245 * Zooms the x axis to the range specified in the attribute document. |
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246 * |
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247 * @param plot The XYPlot. |
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248 * @param axis The axis the shoud be modified. |
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249 * @param range The whole range specified by a dataset. |
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250 * @param x A user defined range (null permitted). |
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251 * |
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252 * @return true, if a zoom range was specified, otherwise false. |
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253 */ |
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254 protected boolean zoom(XYPlot plot, ValueAxis axis, Range range, Range x) { |
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255 if (x != null) { |
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256 double min = range.getLowerBound(); |
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257 double max = range.getUpperBound(); |
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258 double diff = max > min ? max - min : min - max; |
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259 |
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260 Range computed = new Range( |
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261 min + x.getLowerBound() * diff, |
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262 min + x.getUpperBound() * diff); |
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263 |
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264 axis.setRangeWithMargins(computed); |
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265 |
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266 logger.debug("Zoom axis to: " + computed); |
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267 |
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268 return true; |
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269 } |
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270 |
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271 axis.setRangeWithMargins(range); |
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272 return false; |
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273 } |
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274 |
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275 |
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276 /** |
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277 * This method extracts the minimum and maximum values for x and y axes. |
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278 * |
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279 * @param dataset The dataset that should be observed. |
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280 * |
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281 * @return a Range[] as follows: [x-Range, y-Range]. |
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282 */ |
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283 public static Range[] getRangesForDataset(XYDataset dataset) { |
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284 double[] xr = new double[] { Double.MAX_VALUE, -Double.MAX_VALUE }; |
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285 double[] yr = new double[] { Double.MAX_VALUE, -Double.MAX_VALUE }; |
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286 |
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287 if (dataset != null) { |
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288 int sCount = dataset.getSeriesCount(); |
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289 |
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290 for (int i = 0; i < sCount; i++) { |
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291 int iCount = dataset.getItemCount(i); |
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292 |
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293 for (int j = 0; j < iCount; j++) { |
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294 double x = dataset.getX(i, j).doubleValue(); |
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295 double y = dataset.getY(i, j).doubleValue(); |
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296 |
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297 if (!Double.isNaN(x)) { |
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298 xr[0] = xr[0] < x ? xr[0] : x; |
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299 xr[1] = xr[1] > x ? xr[1] : x; |
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300 } |
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301 |
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302 if (!Double.isNaN(y)) { |
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303 yr[0] = yr[0] < y ? yr[0] : y; |
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304 yr[1] = yr[1] > y ? yr[1] : y; |
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305 } |
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306 } |
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307 } |
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308 } |
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309 |
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310 // this is only required, if there are no items in the dataset. |
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311 xr[0] = xr[0] < xr[1] ? xr[0] : xr[1]; |
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312 xr[1] = xr[1] > xr[0] ? xr[1] : xr[0]; |
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313 yr[0] = yr[0] < yr[1] ? yr[0] : yr[1]; |
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314 yr[1] = yr[1] > yr[0] ? yr[1] : yr[0]; |
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315 |
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316 return new Range[] {new Range(xr[0], xr[1]), new Range(yr[0], yr[1])}; |
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317 } |
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318 |
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319 |
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320 protected void addAnnotations(XYPlot plot) { |
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321 plot.clearAnnotations(); |
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322 |
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323 if (annotations == null) { |
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324 logger.debug("No Annotations given."); |
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325 return; |
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326 } |
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327 |
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328 LegendItemCollection lic = new LegendItemCollection(); |
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329 |
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330 int idx = 0; |
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331 if (plot.getRangeAxis(idx) == null && plot.getRangeAxisCount() >= 2) { |
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332 idx = 1; |
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333 } |
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334 |
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335 XYItemRenderer renderer = plot.getRenderer(idx); |
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336 |
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337 for (FLYSAnnotation fa: annotations) { |
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338 Document theme = fa.getTheme(); |
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339 |
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340 Color color = theme != null |
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341 ? ThemeUtil.parseLineColorField(theme) |
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342 : null; |
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343 |
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344 if (color == null) { |
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345 color = Color.black; |
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346 } |
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347 |
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348 lic.add(new LegendItem(fa.getLabel(), color)); |
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349 |
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350 for (XYTextAnnotation ta: fa.getAnnotations()) { |
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351 ta.setPaint(color); |
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352 renderer.addAnnotation(ta); |
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353 } |
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354 |
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355 plot.setFixedLegendItems(lic); |
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356 } |
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357 } |
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358 |
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359 |
369
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360 /** |
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361 * Adjusts the axes of a plot. |
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362 * |
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363 * @param plot The XYPlot of the chart. |
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364 */ |
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365 protected void adjustAxes(XYPlot plot) { |
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366 NumberAxis yAxis = (NumberAxis) plot.getRangeAxis(); |
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367 |
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368 yAxis.setAutoRangeIncludesZero(false); |
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369 } |
414
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370 |
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371 |
419
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372 protected void adjustPlot(XYPlot plot) { |
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373 Stroke gridStroke = new BasicStroke( |
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374 DEFAULT_GRID_LINE_WIDTH, |
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375 BasicStroke.CAP_BUTT, |
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376 BasicStroke.JOIN_MITER, |
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377 3.0f, |
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378 new float[] { 3.0f }, |
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379 0.0f); |
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380 |
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381 plot.setDomainGridlineStroke(gridStroke); |
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382 plot.setDomainGridlinePaint(DEFAULT_GRID_COLOR); |
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383 plot.setDomainGridlinesVisible(true); |
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384 |
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385 plot.setRangeGridlineStroke(gridStroke); |
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386 plot.setRangeGridlinePaint(DEFAULT_GRID_COLOR); |
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387 plot.setRangeGridlinesVisible(true); |
654
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388 |
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389 plot.setAxisOffset(new RectangleInsets(0d, 0d, 0d, 0d)); |
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390 |
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391 if (plot.getDataset(0) != null) { |
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392 plot.mapDatasetToRangeAxis(0, 0); |
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393 } |
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394 |
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395 if (plot.getDataset(1) != null) { |
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396 plot.mapDatasetToRangeAxis(1, 1); |
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397 } |
419
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398 } |
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399 |
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400 |
414
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401 protected void addSubtitles(JFreeChart chart) { |
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402 // override this method in subclasses that need subtitles |
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403 } |
924
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404 |
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405 |
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406 /** |
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407 * This method walks over all axes (domain and range) of <i>plot</i> and |
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408 * calls localizeDomainAxis() for domain axes or localizeRangeAxis() for |
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409 * range axes. |
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410 * |
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411 * @param plot The XYPlot. |
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412 */ |
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413 private void localizeAxes(XYPlot plot) { |
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414 for (int i = 0, num = plot.getDomainAxisCount(); i < num; i++) { |
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415 ValueAxis axis = plot.getDomainAxis(i); |
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416 |
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417 if (axis != null) { |
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418 localizeDomainAxis(axis); |
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419 } |
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420 else { |
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421 logger.warn("Domain axis at " + i + " is null."); |
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422 } |
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423 } |
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424 |
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425 for (int i = 0, num = plot.getRangeAxisCount(); i < num; i++) { |
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426 ValueAxis axis = plot.getRangeAxis(i); |
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427 |
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428 if (axis != null) { |
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429 localizeRangeAxis(axis); |
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430 } |
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431 else { |
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432 logger.warn("Range axis at " + i + " is null."); |
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433 } |
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434 } |
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435 } |
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436 |
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437 |
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438 /** |
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439 * Overrides the NumberFormat with the NumberFormat for the current locale |
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440 * that is provided by getLocale(). |
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441 * |
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442 * @param domainAxis The domain axis that needs localization. |
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443 */ |
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444 protected void localizeDomainAxis(ValueAxis domainAxis) { |
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445 NumberFormat nf = NumberFormat.getInstance(getLocale()); |
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446 ((NumberAxis) domainAxis).setNumberFormatOverride(nf); |
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447 } |
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448 |
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449 |
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450 /** |
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451 * Overrides the NumberFormat with the NumberFormat for the current locale |
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452 * that is provided by getLocale(). |
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453 * |
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454 * @param domainAxis The domain axis that needs localization. |
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455 */ |
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456 protected void localizeRangeAxis(ValueAxis rangeAxis) { |
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457 NumberFormat nf = NumberFormat.getInstance(getLocale()); |
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458 ((NumberAxis) rangeAxis).setNumberFormatOverride(nf); |
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459 } |
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460 |
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461 |
924
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462 protected void applyThemes(XYPlot plot) { |
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463 if (first != null) { |
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464 applyThemes(plot, first, 0); |
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465 } |
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466 |
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467 if (second != null) { |
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468 applyThemes(plot, second, 1); |
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469 } |
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470 } |
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471 |
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472 |
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473 protected void applyThemes(XYPlot plot, XYSeriesCollection dataset, int i) { |
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474 LegendItemCollection lic = new LegendItemCollection(); |
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475 LegendItemCollection anno = plot.getFixedLegendItems(); |
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476 |
924
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477 XYLineAndShapeRenderer r = getRenderer(plot, i); |
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478 |
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479 for (int s = 0, num = dataset.getSeriesCount(); s < num; s++) { |
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480 XYSeries series = dataset.getSeries(s); |
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481 |
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482 if (series instanceof StyledXYSeries) { |
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483 ((StyledXYSeries) series).applyTheme(r, s); |
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484 } |
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485 |
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486 lic.add(r.getLegendItem(i, s)); |
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487 } |
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488 |
1679
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489 if (anno != null) { |
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490 lic.addAll(anno); |
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491 } |
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492 |
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493 plot.setFixedLegendItems(lic); |
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494 |
924
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495 plot.setRenderer(i, r); |
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496 } |
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497 |
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498 |
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499 protected XYLineAndShapeRenderer getRenderer(XYPlot plot, int idx) { |
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500 XYLineAndShapeRenderer r = |
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501 (XYLineAndShapeRenderer) plot.getRenderer(idx); |
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502 |
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503 if (r != null) { |
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504 return r; |
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505 } |
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506 |
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507 if (idx == 0) { |
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508 logger.warn("No default renderer set!"); |
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509 return new XYLineAndShapeRenderer(); |
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510 } |
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511 |
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512 r = (XYLineAndShapeRenderer) plot.getRenderer(0); |
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513 |
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514 try { |
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515 return (XYLineAndShapeRenderer) r.clone(); |
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516 } |
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517 catch (CloneNotSupportedException cnse) { |
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518 logger.warn(cnse, cnse); |
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519 } |
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520 |
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521 logger.warn("No applicalable renderer found!"); |
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522 |
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523 return new XYLineAndShapeRenderer(); |
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524 } |
369
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Implemented the chart creation of a longitudinal section chart - W and Q facets.
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525 } |
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Implemented the chart creation of a longitudinal section chart - W and Q facets.
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526 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |