Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/exports/ChartHelper.java @ 6332:f5bb53106ae8

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Remove createBarriersLayer and createBarriers The generated mapfiles did not work and were just confusing. This looks like historical cruft that was never deleted. The real barrier mapfiles are created in the Floodmap state
author Andre Heinecke <aheinecke@intevation.de>
date Thu, 13 Jun 2013 17:24:56 +0200
parents af13ceeba52a
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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Sascha L. Teichmann <teichmann@intevation.de>
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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 org.jfree.data.Range;
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12 import org.jfree.data.xy.XYDataset;
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13 import org.jfree.data.xy.XYSeriesCollection;
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14 import org.jfree.data.time.RegularTimePeriod;
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15 import org.jfree.data.time.TimeSeriesCollection;
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16 import org.jfree.data.time.TimeSeries;
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17
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18 import org.apache.log4j.Logger;
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19
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20 import org.dive4elements.river.jfree.Bounds;
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21 import org.dive4elements.river.jfree.DoubleBounds;
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22 import org.dive4elements.river.jfree.TimeBounds;
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23
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24
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25 /**
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26 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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27 */
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28 public class ChartHelper {
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29
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30 private static final Logger logger = Logger.getLogger(ChartHelper.class);
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31
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32
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33 /**
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34 * This method returns the ranges of the XYDataset <i>dataset</i> as array
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35 * with [xrange, yrange].
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36 *
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37 * @param dataset The dataset which should be evaluated.
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38 *
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39 * @return an array with x and y ranges.
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40 */
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41 public static Bounds[] getBounds(XYSeriesCollection dataset) {
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42 int seriesCount = dataset != null ? dataset.getSeriesCount() : 0;
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43
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44 if (seriesCount == 0) {
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45 logger.warn("Dataset is empty or has no Series set.");
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46 return null;
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47 }
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48
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49 boolean foundValue = false;
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50
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51 double minX = Double.MAX_VALUE;
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52 double maxX = -Double.MAX_VALUE;
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53 double minY = Double.MAX_VALUE;
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54 double maxY = -Double.MAX_VALUE;
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55
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56 for (int i = 0, m = seriesCount; i < m; i++) {
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57 for (int j = 0, n = dataset.getItemCount(i); j < n; j++) {
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58 double x = dataset.getXValue(i, j);
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59 double y = dataset.getYValue(i, j);
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60
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61 if (Double.isNaN(x) || Double.isNaN(y)) {
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62 logger.warn("Item " + j + " in Series " + i + " is broken");
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63 continue;
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64 }
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65
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66 foundValue = true;
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67
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68 if (x < minX) {
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69 minX = x;
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70 }
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71
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72 if (x > maxX) {
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73 maxX = x;
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74 }
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75
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76 if (y < minY) {
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77 minY = y;
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78 }
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79
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80 if (y > maxY) {
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81 maxY = y;
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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 return foundValue
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87 ? new Bounds[] {
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88 new DoubleBounds(minX, maxX),
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89 new DoubleBounds(minY, maxY) }
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90 : null;
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91 }
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92
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93
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94 public static Bounds[] getBounds(XYDataset dataset) {
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95 if (dataset instanceof XYSeriesCollection) {
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96 return getBounds((XYSeriesCollection) dataset);
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97 }
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98 else if(dataset instanceof TimeSeriesCollection) {
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99 return getBounds((TimeSeriesCollection) dataset);
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100 }
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101 else {
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102 logger.warn("Unknown XYDataset instance: " + dataset.getClass());
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103 return null;
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104 }
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105 }
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106
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107
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108 public static Bounds[] getBounds(TimeSeriesCollection collection) {
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109 int seriesCount = collection != null ? collection.getSeriesCount() : 0;
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110
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111 if (seriesCount == 0) {
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112 logger.warn("TimeSeriesCollection is empty or has no Series set.");
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113 return null;
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114 }
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115
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116 boolean foundValue = false;
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117
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118 long lowerX = Long.MAX_VALUE;
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119 long upperX = -Long.MAX_VALUE;
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120
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121 double lowerY = Double.MAX_VALUE;
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122 double upperY = -Double.MAX_VALUE;
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123
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124 for (int i = 0, m = seriesCount; i < m; i++) {
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125 TimeSeries series = collection.getSeries(i);
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126
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127 for (int j = 0, n = collection.getItemCount(i); j < n; j++) {
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128 RegularTimePeriod rtp = series.getTimePeriod(j);
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129
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130 if (rtp == null) {
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131 continue;
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132 }
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133
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134 foundValue = true;
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135
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136 long start = rtp.getFirstMillisecond();
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137 long end = rtp.getLastMillisecond();
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138
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139 if (start < lowerX) {
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140 lowerX = start;
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141 }
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142
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143 if (end > upperX) {
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144 upperX = end;
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145 }
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146
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147 double y = series.getValue(j).doubleValue();
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148
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149 lowerY = Math.min(lowerY, y);
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150 upperY = Math.max(upperY, y);
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151 }
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152 }
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153
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154 if (foundValue) {
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155 return new Bounds[] {
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156 new TimeBounds(lowerX, upperX),
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157 new DoubleBounds(lowerY, upperY)
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158 };
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159 }
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160
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161 return null;
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162 }
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163
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164
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165 /**
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166 * Expand bounds by percent.
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167 *
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168 * @param bounds The bounds to expand.
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169 * @param percent The percentage to expand.
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170 *
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171 * @return a new, expanded bounds.
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172 */
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173 public static Bounds expandBounds(Bounds bounds, double percent) {
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174 if (bounds == null) {
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175 return null;
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176 }
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177
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178 double value = (Double) bounds.getLower();
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179 double expand = Math.abs(value / 100 * percent);
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180
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181 return expand != 0
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182 ? new DoubleBounds(value-expand, value+expand)
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183 : new DoubleBounds(-0.01 * percent, 0.01 * percent);
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184 }
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185
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186
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187 /**
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188 * Expand range by percent.
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189 *
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190 * @param range The range to expand.
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191 * @param percent The percentage to expand.
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192 *
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193 * @return a new, expanded range.
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194 */
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195 public static Range expandRange(Range range, double percent) {
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196 if (range == null) {
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197 return null;
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198 }
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199
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200 double value = range.getLowerBound();
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201 double expand = Math.abs(value / 100 * percent);
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202
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203 return expand != 0
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204 ? new Range(value-expand, value+expand)
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205 : new Range(-0.01 * percent, 0.01 * percent);
2237
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206 }
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
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207 }
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
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208 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org