Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/exports/XYChartGenerator.java @ 653:67c7020f4ed3
Refactored the chart creation in the ChartInfoGenerators. Now, every chart is created by the XYChartGenerator again.
flys-artifacts/trunk@2048 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Fri, 03 Jun 2011 07:20:39 +0000 |
parents | 8fa4c5c9cd1a |
children | bbc966c81809 |
rev | line source |
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369
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1 package de.intevation.flys.exports; |
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2 |
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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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9 import org.apache.log4j.Logger; |
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10 |
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11 import org.jfree.chart.ChartFactory; |
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12 import org.jfree.chart.JFreeChart; |
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13 import org.jfree.chart.axis.NumberAxis; |
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14 import org.jfree.chart.axis.ValueAxis; |
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15 import org.jfree.chart.plot.PlotOrientation; |
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16 import org.jfree.chart.plot.XYPlot; |
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17 import org.jfree.data.Range; |
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18 |
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19 import de.intevation.flys.exports.ChartExportHelper; |
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20 |
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21 |
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22 /** |
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23 * An abstract base class for creating XY charts. |
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24 * |
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25 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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26 */ |
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27 public abstract class XYChartGenerator extends ChartGenerator { |
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28 |
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29 /** The logger that is used in this generator.*/ |
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30 private static Logger logger = Logger.getLogger(ChartGenerator.class); |
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31 |
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32 |
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33 public static final Color DEFAULT_GRID_COLOR = Color.GRAY; |
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34 public static final float DEFAULT_GRID_LINE_WIDTH = 0.3f; |
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35 |
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Display gridlines in charts.
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36 |
369
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37 /** |
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38 * Returns the title of a chart. |
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39 * |
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40 * @return the title of a chart. |
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41 */ |
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42 protected abstract String getChartTitle(); |
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43 |
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44 /** |
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45 * Returns the X-Axis label of a chart. |
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46 * |
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47 * @return the X-Axis label of a chart. |
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48 */ |
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49 protected abstract String getXAxisLabel(); |
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50 |
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51 /** |
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52 * Returns the Y-Axis label of a chart. |
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53 * |
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54 * @return the Y-Axis label of a chart. |
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55 */ |
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56 protected abstract String getYAxisLabel(); |
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57 |
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58 /** |
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59 * This method is called to add all datasets of a concrete XYChartGenerator |
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60 * to the JFreeChart. |
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61 * |
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62 * @param chart The JFreeChart object. |
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63 */ |
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64 protected abstract void addDatasets(JFreeChart chart); |
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65 |
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66 |
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67 public void generate() |
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68 throws IOException |
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69 { |
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70 logger.debug("XYChartGenerator.generate"); |
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71 |
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parents:
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72 JFreeChart chart = generateChart(); |
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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73 |
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parents:
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74 int[] size = getSize(); |
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parents:
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75 |
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parents:
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76 ChartExportHelper.exportImage( |
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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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77 out, |
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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78 chart, |
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parents:
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79 "png", |
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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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80 size[0], size[1]); |
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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81 } |
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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82 |
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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83 |
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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84 public JFreeChart generateChart() { |
67c7020f4ed3
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parents:
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85 logger.debug("XYChartGenerator.generateChart"); |
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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86 |
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87 JFreeChart chart = ChartFactory.createXYLineChart( |
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88 getChartTitle(), |
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89 getXAxisLabel(), |
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90 getYAxisLabel(), |
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91 null, |
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92 PlotOrientation.VERTICAL, |
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93 true, |
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94 false, |
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95 false); |
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96 |
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97 chart.setBackgroundPaint(Color.WHITE); |
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98 chart.getPlot().setBackgroundPaint(Color.WHITE); |
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99 |
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100 XYPlot plot = (XYPlot) chart.getPlot(); |
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101 |
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102 addDatasets(chart); |
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Added subtitles to the available charts.
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103 addSubtitles(chart); |
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104 adjustPlot(plot); |
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105 adjustAxes(plot); |
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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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parents:
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106 zoom(plot); |
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107 |
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108 return chart; |
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109 } |
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110 |
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111 |
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112 /** |
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113 * Zooms the chart to the ranges specified in the attribute document. |
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114 * |
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115 * @param plot The XYPlot. |
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116 */ |
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117 protected void zoom(XYPlot plot) { |
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118 logger.debug("Zoom to specified ranges."); |
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119 zoomX(plot); |
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120 zoomY(plot); |
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121 } |
652
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122 |
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123 |
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124 /** |
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125 * Zooms the x axis to the range specified in the attribute document. |
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126 * |
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127 * @param plot The XYPlot. |
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128 */ |
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129 protected void zoomX(XYPlot plot) { |
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130 Range xrange = getDomainAxisRange(); |
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131 if (xrange != null) { |
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132 ValueAxis xaxis = plot.getDomainAxis(); |
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133 xaxis.setRange(xrange); |
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134 |
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135 logger.debug("Zoom chart to X: " + xrange); |
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136 } |
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137 } |
652
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138 |
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139 |
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140 /** |
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141 * Zooms the y axis to the range specified in the attribute document. |
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142 * |
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143 * @param plot The XYPlot. |
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144 */ |
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145 protected void zoomY(XYPlot plot) { |
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146 Range yrange = getValueAxisRange(); |
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147 if (yrange != null) { |
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148 ValueAxis yaxis = plot.getRangeAxis(); |
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149 yaxis.setRange(yrange); |
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150 |
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151 logger.debug("Zoom chart to Y: " + yrange); |
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152 } |
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153 } |
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154 |
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155 |
369
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156 /** |
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157 * Adjusts the axes of a plot. |
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158 * |
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159 * @param plot The XYPlot of the chart. |
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160 */ |
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161 protected void adjustAxes(XYPlot plot) { |
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162 NumberAxis yAxis = (NumberAxis) plot.getRangeAxis(); |
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163 |
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164 yAxis.setAutoRangeIncludesZero(false); |
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165 } |
414
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166 |
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167 |
419
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168 protected void adjustPlot(XYPlot plot) { |
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169 Stroke gridStroke = new BasicStroke( |
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170 DEFAULT_GRID_LINE_WIDTH, |
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171 BasicStroke.CAP_BUTT, |
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172 BasicStroke.JOIN_MITER, |
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173 3.0f, |
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174 new float[] { 3.0f }, |
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175 0.0f); |
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176 |
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177 plot.setDomainGridlineStroke(gridStroke); |
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178 plot.setDomainGridlinePaint(DEFAULT_GRID_COLOR); |
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179 plot.setDomainGridlinesVisible(true); |
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180 |
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181 plot.setRangeGridlineStroke(gridStroke); |
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182 plot.setRangeGridlinePaint(DEFAULT_GRID_COLOR); |
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183 plot.setRangeGridlinesVisible(true); |
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184 } |
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185 |
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186 |
414
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187 protected void addSubtitles(JFreeChart chart) { |
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188 // override this method in subclasses that need subtitles |
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189 } |
369
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190 } |
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191 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |