Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/exports/InfoGeneratorHelper2.java @ 7167:2fd238b681a9

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Add debug output triggered by debugging the last commit
author Andre Heinecke <aheinecke@intevation.de>
date Thu, 26 Sep 2013 12:22:01 +0200
parents 74ebe5e7fa69
children e4606eae8ea5
rev   line source
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Sascha L. Teichmann <teichmann@intevation.de>
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.exports;
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10
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11 import java.awt.geom.AffineTransform;
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12 import java.awt.geom.NoninvertibleTransformException;
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13 import java.awt.geom.Rectangle2D;
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14
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15 import java.util.Date;
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16
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17 import org.w3c.dom.Document;
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18 import org.w3c.dom.Element;
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19
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20 import org.apache.log4j.Logger;
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21
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22 import org.jfree.chart.ChartRenderingInfo;
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23 import org.jfree.chart.JFreeChart;
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24 import org.jfree.chart.axis.DateAxis;
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25 import org.jfree.chart.axis.NumberAxis;
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26 import org.jfree.chart.axis.ValueAxis;
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27 import org.jfree.chart.plot.XYPlot;
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28 import org.jfree.data.Range;
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29 import org.jfree.data.xy.XYDataset;
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30
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31 import org.dive4elements.artifacts.common.ArtifactNamespaceContext;
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32 import org.dive4elements.artifacts.common.utils.XMLUtils;
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33 import org.dive4elements.artifacts.common.utils.XMLUtils.ElementCreator;
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34
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35 import org.dive4elements.river.jfree.Bounds;
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36
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37
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38 /**
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39 * This class helps generating chart info documents.
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40 */
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41 public class InfoGeneratorHelper2 {
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42
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43 /** Private logging instance. */
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44 private static final Logger logger =
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45 Logger.getLogger(InfoGeneratorHelper2.class);
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46
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47 protected ChartGenerator2 generator;
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48
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49 public InfoGeneratorHelper2(ChartGenerator2 generator) {
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50 this.generator = generator;
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51 }
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52
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53 /**
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54 * Triggers the creation of the chart info document.
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55 *
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56 * @param chart The JFreeChart chart.
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57 * @param info An info object that has been created while chart creation.
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58 *
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59 * @return the info document.
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60 */
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61 public Document createInfoDocument(
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62 JFreeChart chart,
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63 ChartRenderingInfo info)
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64 {
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65 logger.debug("InfoGeneratorHelper.createInfoDocument");
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66
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67 Document doc = XMLUtils.newDocument();
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68
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69 ElementCreator cr = new ElementCreator(
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70 doc,
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71 ArtifactNamespaceContext.NAMESPACE_URI,
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72 ArtifactNamespaceContext.NAMESPACE_PREFIX);
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73
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74 Element chartinfo = cr.create("chartinfo");
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75
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76 chartinfo.appendChild(createAxesElements(cr, chart));
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77 chartinfo.appendChild(createTransformationElements(cr, chart, info));
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78
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79 doc.appendChild(chartinfo);
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80
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81 return doc;
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82 }
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83
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84
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85 /**
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86 * This method create a axes element that contains all domain and range
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87 * axes of the given chart.
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88 *
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89 * @param cr The ElementCreator.
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90 * @param chart The chart that provides range information of its axes.
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91 *
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92 * @return an element with axes information.
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93 */
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94 protected Element createAxesElements(
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95 ElementCreator cr,
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96 JFreeChart chart)
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97 {
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98 logger.debug("InfoGeneratorHelper.createRangeElements");
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99
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100 Element axes = cr.create("axes");
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101
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102 XYPlot plot = (XYPlot) chart.getPlot();
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103
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104 int dAxisCount = plot.getDomainAxisCount();
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105 for (int i = 0; i < dAxisCount; i++) {
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106 ValueAxis axis = plot.getDomainAxis(i);
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107 XYDataset data = plot.getDataset(i);
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108
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109 if (axis != null) {
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110 Element e = createAxisElement(cr, axis, data, "domain", i);
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111 axes.appendChild(e);
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112 }
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113 }
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114
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115 int rAxisCount = plot.getRangeAxisCount();
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116 for (int i = 0; i < rAxisCount; i++) {
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117 ValueAxis axis = plot.getRangeAxis(i);
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118 XYDataset data = plot.getDataset(i);
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119
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120 if (axis == null || data == null) {
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121 logger.warn("Axis or dataset is empty at pos: " + i);
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122 continue;
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123 }
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124
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125 Element e = createAxisElement(cr, axis, data, "range", i);
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126 axes.appendChild(e);
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127 }
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128
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129 return axes;
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130 }
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131
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132
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133 /**
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134 * This method create a axis element for a given <i>axis</i> and
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135 * <i>type</i>. Type can be one of 'domain' or 'range'.
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136 *
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137 * @param cr The ElementCreator
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138 * @param axis The axis that provides range information.
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139 * @param dataset The dataset for min/max determination.
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140 * @param type The axis type ('domain' or 'range').
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141 * @param pos The position in the chart.
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142 *
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143 * @return An element that contains range information of a given axis.
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144 */
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145 protected Element createAxisElement(
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146 ElementCreator cr,
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147 ValueAxis axis,
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148 XYDataset dataset,
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149 String type,
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150 int pos)
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151 {
1944
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152 logger.debug("createAxisElement " + pos);
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153 logger.debug("Axis is from type: " + axis.getClass());
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154
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155 Element e = cr.create(type);
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156 cr.addAttr(e, "pos", String.valueOf(pos), true);
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157
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158 if (axis instanceof DateAxis) {
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159 prepareDateAxisElement(
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160 e, cr, (DateAxis) axis, dataset, type, pos);
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161 }
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162 else {
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163 prepareNumberAxisElement(
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164 e, cr, (NumberAxis) axis, dataset, type, pos);
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165 }
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166
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167 return e;
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168 }
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169
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170
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171 protected Element prepareNumberAxisElement(
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172 Element e,
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173 ElementCreator cr,
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174 NumberAxis axis,
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175 XYDataset dataset,
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176 String type,
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177 int pos
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178 ) {
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179 Range range = axis.getRange();
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180
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181 cr.addAttr(e, "from", String.valueOf(range.getLowerBound()), true);
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182 cr.addAttr(e, "to", String.valueOf(range.getUpperBound()), true);
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183 cr.addAttr(e, "axistype", "number", true);
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184
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185 Range[] rs = generator.getRangesForAxis(pos);
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186 Range r = null;
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187
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188 if (type.equals("range")) {
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189 r = rs[1];
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190 }
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191 else {
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192 r = rs[0];
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193 }
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194
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195 cr.addAttr(e, "min", String.valueOf(r.getLowerBound()), true);
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196 cr.addAttr(e, "max", String.valueOf(r.getUpperBound()), true);
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197
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198 return e;
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199 }
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200
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201
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202 protected Element prepareDateAxisElement(
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203 Element e,
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204 ElementCreator cr,
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205 DateAxis axis,
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206 XYDataset dataset,
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207 String type,
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208 int pos
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209 ) {
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210 Date from = axis.getMinimumDate();
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211 Date to = axis.getMaximumDate();
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212
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213 Bounds bounds = null;
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214 if (type.equals("range")) {
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215 bounds = generator.getYBounds(pos);
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216 }
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217 else {
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218 bounds = generator.getXBounds(pos);
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219 }
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220
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221 cr.addAttr(e, "axistype", "date", true);
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222 cr.addAttr(e, "from", String.valueOf(from.getTime()), true);
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223 cr.addAttr(e, "to", String.valueOf(to.getTime()), true);
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224
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225 cr.addAttr(e, "min", bounds.getLower().toString(), true);
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226 cr.addAttr(e, "max", bounds.getUpper().toString(), true);
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227
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228 return e;
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229 }
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230
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231
659
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232 /**
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233 * This method appends the values of a transformation matrix to transform
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234 * image pixel coordinates into chart coordinates.
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235 *
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236 * @param cr The ElementCreator.
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237 * @param chart The chart object.
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238 * @param info The ChartRenderingInfo that is filled while chart creation.
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239 *
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240 * @return an element that contains one or more transformation matrix.
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241 */
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242 protected Element createTransformationElements(
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243 ElementCreator cr,
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244 JFreeChart chart,
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245 ChartRenderingInfo info)
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246 {
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247 logger.debug("InfoGeneratorHelper.createTransformationElements");
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248
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249 Element tf = cr.create("transformation-matrix");
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250
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251 Rectangle2D dataArea = info.getPlotInfo().getDataArea();
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252
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253 XYPlot plot = (XYPlot) chart.getPlot();
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254 ValueAxis xAxis = plot.getDomainAxis();
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255
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256 if (xAxis == null) {
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257 logger.error("There is no x axis in the chart!");
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258 return null;
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259 }
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260
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261 for (int i = 0, num = plot.getRangeAxisCount(); i < num; i++) {
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262 ValueAxis yAxis = plot.getRangeAxis(i);
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263
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264 if (yAxis == null) {
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265 logger.warn("No y axis at pos " + i + " existing.");
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266 continue;
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267 }
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268
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269 Element matrix = createTransformationElement(
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270 cr, xAxis, yAxis, dataArea, i);
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271
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272 tf.appendChild(matrix);
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273 }
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274
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275 return tf;
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276 }
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277
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278
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279 /**
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280 * Creates an element that contains values used to transform coordinates
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281 * of a coordinate system A into a coordinate system B.
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282 *
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283 * @param cr The ElementCreator.
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284 * @param xAxis The x axis of the target coordinate system.
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285 * @param yAxis The y axis of the target coordinate system.
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286 * @param dataArea The pixel coordinates of the chart image.
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287 * @param pos The dataset position.
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288 *
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289 * @return an element that contains transformation matrix values.
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290 */
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291 protected Element createTransformationElement(
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292 ElementCreator cr,
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293 ValueAxis xAxis,
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294 ValueAxis yAxis,
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295 Rectangle2D dataArea,
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296 int pos)
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297 {
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298 double[] tm = createTransformationMatrix(dataArea, xAxis, yAxis);
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299
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300 Element matrix = cr.create("matrix");
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301
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302 cr.addAttr(matrix, "pos", String.valueOf(pos), true);
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303 cr.addAttr(matrix, "sx", String.valueOf(tm[0]), true);
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304 cr.addAttr(matrix, "sy", String.valueOf(tm[1]), true);
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305 cr.addAttr(matrix, "tx", String.valueOf(tm[2]), true);
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306 cr.addAttr(matrix, "ty", String.valueOf(tm[3]), true);
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307
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308 if (xAxis instanceof DateAxis) {
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309 cr.addAttr(matrix, "xtype", "date", true);
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310 }
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311 else {
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312 cr.addAttr(matrix, "xtype", "number", true);
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313 }
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314
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315 if (yAxis instanceof DateAxis) {
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316 cr.addAttr(matrix, "ytype", "date", true);
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317 }
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318 else {
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319 cr.addAttr(matrix, "ytype", "number", true);
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320 }
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321
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322 return matrix;
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323 }
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324
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325
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326 /**
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327 * This method determines a transformation matrix to transform pixel
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328 * coordinates of the chart image into chart coordinates.
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329 *
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330 * @param dataArea The rectangle that contains the data points of the chart.
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331 * @param xAxis The x axis.
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332 * @param yAxis The y axis.
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333 *
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334 * @return a double array as follows: [sx, sy, tx, ty].
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335 */
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336 protected static double[] createTransformationMatrix(
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337 Rectangle2D dataArea,
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338 ValueAxis xAxis,
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339 ValueAxis yAxis)
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340 {
648
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341 logger.debug("InfoGeneratorHelper.createTransformationMatrix");
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342
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343 double offsetX = dataArea.getX();
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344 double width = dataArea.getWidth();
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345 double offsetY = dataArea.getY();
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346 double height = dataArea.getHeight();
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347
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348 Range xRange = getRangeFromAxis(xAxis);
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349 Range yRange = getRangeFromAxis(yAxis);
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350
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351 double lowerX = xRange.getLowerBound();
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352 double upperX = xRange.getUpperBound();
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353 double lowerY = yRange.getLowerBound();
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354 double upperY = yRange.getUpperBound();
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355
648
d4c4fefb095b The matrix that is used to transform chart image coordinates into chart coordinates supports inverted x-axis now.
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356 if (xAxis.isInverted()) {
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357 logger.info("X-Axis is inverted!");
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358
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359 double tmp = upperX;
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360 upperX = lowerX;
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361 lowerX = tmp;
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362 }
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363
647
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364 double dMoveX = upperX - lowerX;
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365 double fMoveX = width * lowerX;
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366 double dMoveY = lowerY - upperY;
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367 double fMoveY = height * upperY;
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368
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369 AffineTransform t1 = AffineTransform.getTranslateInstance(
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370 offsetX - ( fMoveX / dMoveX ),
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371 offsetY - ( fMoveY / dMoveY ) );
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372
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373 AffineTransform t2 = AffineTransform.getScaleInstance(
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374 width / (upperX - lowerX),
bb484489d3df Introduced a new output generators for creating chart info documents.
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375 height / (lowerY - upperY));
bb484489d3df Introduced a new output generators for creating chart info documents.
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376
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377 t1.concatenate(t2);
bb484489d3df Introduced a new output generators for creating chart info documents.
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378
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379 try {
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380 t1.invert();
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381
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382 double[] c = new double[6];
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383 t1.getMatrix(c);
bb484489d3df Introduced a new output generators for creating chart info documents.
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384
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385 return new double[] { c[0], c[3], c[4], c[5] };
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386 }
bb484489d3df Introduced a new output generators for creating chart info documents.
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387 catch (NoninvertibleTransformException e) {
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388 // do nothing
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389 logger.warn("Matrix is not invertible.");
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390 }
bb484489d3df Introduced a new output generators for creating chart info documents.
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391
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392 return new double[] { 1d, 1d, 0d, 0d };
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393 }
2273
7b8d59436be3 Set proper bounds for date axes in the chart info document; tell the transformation matrix which type it is (date/number).
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394
7b8d59436be3 Set proper bounds for date axes in the chart info document; tell the transformation matrix which type it is (date/number).
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parents: 2261
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395
7b8d59436be3 Set proper bounds for date axes in the chart info document; tell the transformation matrix which type it is (date/number).
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396 protected static Range getRangeFromAxis(ValueAxis axis) {
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397 if (axis instanceof DateAxis) {
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398 DateAxis dAxis = (DateAxis) axis;
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399 Date min = dAxis.getMinimumDate();
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parents: 2261
diff changeset
400 Date max = dAxis.getMaximumDate();
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parents: 2261
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401
7b8d59436be3 Set proper bounds for date axes in the chart info document; tell the transformation matrix which type it is (date/number).
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diff changeset
402 return new Range(min.getTime(), max.getTime());
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parents: 2261
diff changeset
403 }
7b8d59436be3 Set proper bounds for date axes in the chart info document; tell the transformation matrix which type it is (date/number).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2261
diff changeset
404 else {
7b8d59436be3 Set proper bounds for date axes in the chart info document; tell the transformation matrix which type it is (date/number).
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parents: 2261
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405 return axis.getRange();
7b8d59436be3 Set proper bounds for date axes in the chart info document; tell the transformation matrix which type it is (date/number).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2261
diff changeset
406 }
7b8d59436be3 Set proper bounds for date axes in the chart info document; tell the transformation matrix which type it is (date/number).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2261
diff changeset
407 }
647
bb484489d3df Introduced a new output generators for creating chart info documents.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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408 }
bb484489d3df Introduced a new output generators for creating chart info documents.
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409 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org