Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/jfree/EnhancedLineAndShapeRenderer.java @ 2249:997df76c6f58

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Create title, subtitle and axes labels for charts from type historical discharge curve. flys-artifacts/trunk@3898 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 03 Feb 2012 13:42:48 +0000
parents 2b232871ba28
children 74c02dbf17ca
rev   line source
2074
a026d005accd Moved JFreeChart specific classes to de.intevation.flys.jfree and added required imports.
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1 package de.intevation.flys.jfree;
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2
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3 import java.awt.Graphics2D;
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4 import java.awt.Shape;
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5 import java.awt.geom.Rectangle2D;
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6 import java.util.HashMap;
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7 import java.util.Map;
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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.axis.ValueAxis;
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12 import org.jfree.chart.entity.EntityCollection;
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13 import org.jfree.chart.plot.CrosshairState;
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14 import org.jfree.chart.plot.PlotOrientation;
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15 import org.jfree.chart.plot.XYPlot;
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16 import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
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17 import org.jfree.data.xy.XYDataset;
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18 import org.jfree.ui.RectangleEdge;
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19 import org.jfree.util.BooleanList;
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20 import org.jfree.util.ShapeUtilities;
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21
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22
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23 public class EnhancedLineAndShapeRenderer extends XYLineAndShapeRenderer {
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24
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25 private static final Logger logger =
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26 Logger.getLogger(EnhancedLineAndShapeRenderer.class);
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27
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28 protected BooleanList isMinimumShapeVisible;
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29 protected BooleanList isMaximumShapeVisible;
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30
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31 protected Map<Integer, Double> seriesMinimum;
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32 protected Map<Integer, Double> seriesMaximum;
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33
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34
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35 public EnhancedLineAndShapeRenderer(boolean lines, boolean shapes) {
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36 super(lines, shapes);
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37 this.isMinimumShapeVisible = new BooleanList();
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38 this.isMaximumShapeVisible = new BooleanList();
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39 this.seriesMinimum = new HashMap<Integer, Double>();
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40 this.seriesMaximum = new HashMap<Integer, Double>();
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41 }
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42
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43
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44 public boolean getItemShapeVisible(XYDataset dataset, int series, int item){
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45 if (super.getItemShapeVisible(series, item)) {
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46 return true;
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47 }
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48
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49 if (isMinimumShapeVisible(series) && isMinimum(dataset, series, item)) {
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50 return true;
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51 }
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52
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53 if (isMaximumShapeVisible(series) && isMaximum(dataset, series, item)) {
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54 return true;
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55 }
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56
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57 return false;
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58 }
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59
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60
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61 /**
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62 * Overrides XYLineAndShapeRenderer.drawSecondaryPass() to call an adapted
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63 * method getItemShapeVisible() which now takes an XYDataset. So, 99% of
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64 * code equal the code in XYLineAndShapeRenderer.
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65 */
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66 @Override
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67 protected void drawSecondaryPass(
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68 Graphics2D g2,
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69 XYPlot plot,
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70 XYDataset dataset,
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71 int pass,
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72 int series,
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73 int item,
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74 ValueAxis domainAxis,
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75 Rectangle2D dataArea,
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76 ValueAxis rangeAxis,
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77 CrosshairState crosshairState,
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78 EntityCollection entities
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79 ) {
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80 Shape entityArea = null;
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81
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82 // get the data point...
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83 double x1 = dataset.getXValue(series, item);
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84 double y1 = dataset.getYValue(series, item);
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85 if (Double.isNaN(y1) || Double.isNaN(x1)) {
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86 return;
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87 }
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88
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89 PlotOrientation orientation = plot.getOrientation();
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90 RectangleEdge xAxisLocation = plot.getDomainAxisEdge();
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91 RectangleEdge yAxisLocation = plot.getRangeAxisEdge();
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92 double transX1 = domainAxis.valueToJava2D(x1, dataArea, xAxisLocation);
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93 double transY1 = rangeAxis.valueToJava2D(y1, dataArea, yAxisLocation);
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94
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95 if (getItemShapeVisible(dataset, series, item)) {
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96 Shape shape = getItemShape(series, item);
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97 if (orientation == PlotOrientation.HORIZONTAL) {
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98 shape = ShapeUtilities.createTranslatedShape(shape, transY1,
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99 transX1);
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100 }
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101 else if (orientation == PlotOrientation.VERTICAL) {
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102 shape = ShapeUtilities.createTranslatedShape(shape, transX1,
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103 transY1);
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104 }
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105 entityArea = shape;
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106 if (shape.intersects(dataArea)) {
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107 if (getItemShapeFilled(series, item)) {
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108 if (getUseFillPaint()) {
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109 g2.setPaint(getItemFillPaint(series, item));
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110 }
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111 else {
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112 g2.setPaint(getItemPaint(series, item));
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113 }
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114 g2.fill(shape);
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115 }
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116 if (getDrawOutlines()) {
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117 if (getUseOutlinePaint()) {
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118 g2.setPaint(getItemOutlinePaint(series, item));
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119 }
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120 else {
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121 g2.setPaint(getItemPaint(series, item));
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122 }
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123 g2.setStroke(getItemOutlineStroke(series, item));
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124 g2.draw(shape);
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125 }
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126 }
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127 }
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128
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129 double xx = transX1;
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130 double yy = transY1;
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131 if (orientation == PlotOrientation.HORIZONTAL) {
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132 xx = transY1;
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133 yy = transX1;
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134 }
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135
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136 // draw the item label if there is one...
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137 if (isItemLabelVisible(series, item)) {
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138 drawItemLabel(g2, orientation, dataset, series, item, xx, yy,
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139 (y1 < 0.0));
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140 }
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141
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142 int domainAxisIndex = plot.getDomainAxisIndex(domainAxis);
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143 int rangeAxisIndex = plot.getRangeAxisIndex(rangeAxis);
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144 updateCrosshairValues(crosshairState, x1, y1, domainAxisIndex,
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145 rangeAxisIndex, transX1, transY1, orientation);
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146
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147 // add an entity for the item, but only if it falls within the data
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148 // area...
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149 if (entities != null && isPointInRect(dataArea, xx, yy)) {
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150 addEntity(entities, entityArea, dataset, series, item, xx, yy);
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151 }
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152 }
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153
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154
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155 public void setIsMinimumShapeVisisble(int series, boolean isVisible) {
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156 this.isMinimumShapeVisible.setBoolean(series, isVisible);
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157 }
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158
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159
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160 public boolean isMinimumShapeVisible(int series) {
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161 if (this.isMinimumShapeVisible.size() <= series) {
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162 return false;
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163 }
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164
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165 return isMinimumShapeVisible.getBoolean(series);
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166 }
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167
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168
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169 public void setIsMaximumShapeVisible(int series, boolean isVisible) {
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170 this.isMaximumShapeVisible.setBoolean(series, isVisible);
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171 }
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172
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173
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174 public boolean isMaximumShapeVisible(int series) {
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175 if (this.isMaximumShapeVisible.size() <= series) {
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176 return false;
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177 }
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178
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179 return isMaximumShapeVisible.getBoolean(series);
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180 }
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181
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182
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183 public boolean isMinimum(XYDataset dataset, int series, int item) {
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184 return dataset.getYValue(series, item) == getMinimum(dataset, series);
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185 }
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186
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187
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188 public double getMinimum(XYDataset dataset, int series) {
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189 Integer key = Integer.valueOf(series);
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190 Double old = seriesMinimum.get(key);
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191
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192 if (old != null) {
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193 return old.doubleValue();
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194 }
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195
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196 logger.debug("Compute minimum of Series: " + series);
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197
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198 double min = Double.MAX_VALUE;
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199
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200 for (int i = 0, n = dataset.getItemCount(series); i < n; i++) {
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201 double tmpValue = dataset.getYValue(series, i);
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202
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203 if (tmpValue < min) {
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204 min = tmpValue;
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205 }
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206 }
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207
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208 seriesMinimum.put(key, Double.valueOf(min));
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209
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210 return min;
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211 }
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212
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213
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214 public boolean isMaximum(XYDataset dataset, int series, int item) {
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215 return dataset.getYValue(series, item) == getMaximum(dataset, series);
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216 }
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217
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218
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219 public double getMaximum(XYDataset dataset, int series) {
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220 Integer key = Integer.valueOf(series);
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f42b0e624e97 Small bugfix: use correct keys for buffering min/max values in EnhancedLineAndShapeRenderer.
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221 Double old = seriesMaximum.get(key);
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222
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223 if (old != null) {
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224 return old.doubleValue();
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225 }
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226
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227 logger.debug("Compute maximum of Series: " + series);
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228
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229 double max = -Double.MAX_VALUE;
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230
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231 for (int i = 0, n = dataset.getItemCount(series); i < n; i++) {
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232 double tmpValue = dataset.getYValue(series, i);
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233
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234 if (tmpValue > max) {
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235 max = tmpValue;
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236 }
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237 }
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238
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239 seriesMaximum.put(key, Double.valueOf(max));
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240
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241 return max;
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242 }
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243 }
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244 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org