Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/chart/VerticalCrossSectionChart.java @ 474:ab29e4ff2fda

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Added area interpolation needed for "Horizontalschnitt" gnv-artifacts/trunk@540 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Thu, 14 Jan 2010 10:34:05 +0000
parents 20a480753ff9
children 79e80c289018
rev   line source
446
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1 package de.intevation.gnv.chart;
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2
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3 import java.util.Locale;
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4
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5 import java.text.NumberFormat;
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6
446
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7 import java.awt.Color;
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8 import java.awt.Paint;
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9
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10 import java.util.HashSet;
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11
446
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12 import de.intevation.gnv.math.AttributedXYColumns;
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13
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14 import de.intevation.gnv.jfreechart.PolygonDataset;
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15 import de.intevation.gnv.jfreechart.PolygonPlot;
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16 import de.intevation.gnv.jfreechart.PolygonSeries;
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17 import de.intevation.gnv.jfreechart.PolygonRenderer;
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18
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19 import de.intevation.gnv.raster.Palette;
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20
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21 import org.jfree.chart.JFreeChart;
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22
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23 import org.jfree.chart.plot.PlotOrientation;
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24
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25 import org.jfree.chart.axis.ValueAxis;
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26 import org.jfree.chart.axis.NumberAxis;
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27 import org.jfree.chart.axis.SymbolAxis;
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28
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29 import org.jfree.chart.title.PaintScaleLegend;
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30
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31 import org.jfree.chart.renderer.LookupPaintScale;
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32
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33 import org.jfree.ui.RectangleEdge;
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34 import org.jfree.ui.RectangleInsets;
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35
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36 /**
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37 * @author Ingo Weinzierl (ingo.weinzierl@intevation.de)
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38 * @author Sascha L. Teichmann (sascha.teichmann@intevation.de)
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39 */
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40 public class VerticalCrossSectionChart
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41 implements Chart
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42 {
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43 public static final class PalettePaintLookup
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44 implements PolygonRenderer.PaintLookup
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45 {
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46 private Palette palette;
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47
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48 public PalettePaintLookup(Palette palette) {
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49 this.palette = palette;
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50 }
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51
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52 public Paint getPaint(int index) {
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53 return index < 0
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54 ? Color.black
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55 : palette.getColor(index);
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56 }
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57 } // class PalettePaintLookup
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58
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59 public static class LocalizedLabelGenerator
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60 extends PolygonRenderer.DefaultLabelGenerator
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61 {
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62 protected NumberFormat format;
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63
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64 public LocalizedLabelGenerator() {
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65 }
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66
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67 public LocalizedLabelGenerator(NumberFormat format) {
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68 this.format = format;
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69 }
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70
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71 protected String toString(Object label) {
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72 return label instanceof Number
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73 ? format.format(((Number)label).doubleValue())
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74 : super.toString(label);
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75 }
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76 } // class LocalizedLabelGenerator
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77
446
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78 protected JFreeChart chart;
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79
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80 protected AttributedXYColumns columns;
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81 protected Palette palette;
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82 protected Locale locale;
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83
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84 public VerticalCrossSectionChart() {
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85 }
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86
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87 public VerticalCrossSectionChart(
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88 AttributedXYColumns columns,
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89 Palette palette,
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90 Locale locale
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91 ) {
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92 this.columns = columns;
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93 this.palette = palette;
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94 this.locale = locale;
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95 }
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96
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97 protected JFreeChart createChart() {
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98
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99 String title = "Neues 2D-Diagramm";
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100 String xAxis = "x-Achse des Diagramms";
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101 String yAxis = "y-Achse des Diagramms";
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102 boolean legendB = false;
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103 boolean tooltips = false;
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104 boolean urls = false;
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105
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106 PlotOrientation po = PlotOrientation.HORIZONTAL;
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107 PolygonDataset data = columns.getPolygonDataset();
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108
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109 HashSet<Integer> usedColors = new HashSet<Integer>();
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110
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111 for (int i = data.getSeriesCount()-1; i >= 0; --i) {
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112 PolygonSeries ps = data.getSeries(i);
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113 Integer fill = (Integer)ps.getAttribute("fill");
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114 if (fill != null) {
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115 usedColors.add(fill);
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116 }
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117 }
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118
450
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119 NumberFormat format = NumberFormat.getInstance(locale);
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120 format.setMinimumFractionDigits(0);
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121 format.setMaximumFractionDigits(2);
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122
446
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123 PolygonRenderer renderer = new PolygonRenderer(
450
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124 new PalettePaintLookup(palette),
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125 new LocalizedLabelGenerator(format));
446
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126
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127 ValueAxis domainAxis = new NumberAxis(xAxis);
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128 ValueAxis rangeAxis = new NumberAxis(yAxis);
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129
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130 PolygonPlot plot = new PolygonPlot(
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131 data,
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132 renderer,
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133 domainAxis,
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134 rangeAxis,
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135 null);
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136
449
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137 String [] labels = new String[usedColors.size()];
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138
446
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139 int colors = palette.getSize();
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140 LookupPaintScale lookupPaint =
449
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141 new LookupPaintScale(-0.5d, labels.length-0.5d, Color.white);
446
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142
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143 Color color = null;
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144
449
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145 for (int i = 0, j = labels.length-1; i < colors && j >= 0; i++) {
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146 if (usedColors.contains(i)) {
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147 Palette.Entry entry = palette.getEntryByIndex(i);
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148 color = entry.getColor();
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149 labels[j] = entry.getDescription();
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150 lookupPaint.add(j-0.5d, color);
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151 --j;
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152 }
446
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153 }
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154
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155 JFreeChart chart = new JFreeChart(
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156 title,
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157 JFreeChart.DEFAULT_TITLE_FONT,
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158 plot,
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159 legendB);
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160
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161 chart.removeLegend();
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162
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163 SymbolAxis scale = new SymbolAxis("Temperatur", labels);
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164 scale.setRange(-1.5d, labels.length+0.5d);
446
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165 scale.setGridBandsVisible(false);
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166 scale.setPlot(plot);
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167
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168 PaintScaleLegend legend = new PaintScaleLegend(
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169 lookupPaint, scale);
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170 legend.setMargin(new RectangleInsets(3d, 10d, 3d, 10d));
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171 legend.setPosition(RectangleEdge.LEFT);
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172 legend.setAxisOffset(5d);
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173
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174 chart.addSubtitle(legend);
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175
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176 return chart;
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177 }
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178
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179 public JFreeChart generateChart() {
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180 if (chart == null) {
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181 chart = createChart();
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182 }
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183 return chart;
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184 }
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185 }
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186 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org