Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/services/BedloadKMChartService.java @ 9588:c57caff9b00b
Punkt 10.6 CSV-Ausgabe Abflusszeitreihenlänge
author | gernotbelger |
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date | Thu, 10 Jan 2019 11:56:39 +0100 |
parents | 5e38e2924c07 |
children | 0a5239a1e46e |
rev | line source |
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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.artifacts.services; |
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10 |
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11 import java.awt.Color; |
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12 import java.awt.Dimension; |
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13 import java.awt.Transparency; |
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14 import java.awt.image.BufferedImage; |
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15 import java.io.ByteArrayOutputStream; |
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16 import java.io.IOException; |
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17 import java.util.Date; |
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18 import java.util.List; |
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19 |
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20 import javax.imageio.ImageIO; |
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21 |
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22 import org.apache.log4j.Logger; |
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23 import org.jfree.chart.ChartFactory; |
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24 import org.jfree.chart.JFreeChart; |
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25 import org.jfree.chart.axis.DateAxis; |
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26 import org.jfree.chart.plot.PlotOrientation; |
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27 import org.jfree.chart.plot.XYPlot; |
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28 import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; |
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29 import org.jfree.data.xy.XYSeries; |
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30 import org.jfree.data.xy.XYSeriesCollection; |
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31 import org.w3c.dom.Document; |
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32 import org.w3c.dom.Element; |
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33 import org.w3c.dom.NodeList; |
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34 |
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35 import org.dive4elements.artifactdatabase.DefaultService; |
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36 import org.dive4elements.artifacts.CallMeta; |
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37 import org.dive4elements.artifacts.GlobalContext; |
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38 import org.dive4elements.artifacts.Service; |
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39 import org.dive4elements.river.artifacts.model.minfo.BedloadOverview; |
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40 import org.dive4elements.river.artifacts.model.minfo.BedloadOverviewFactory; |
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41 import org.dive4elements.river.artifacts.resources.Resources; |
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42 import org.dive4elements.river.backend.SedDBSessionHolder; |
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43 import org.dive4elements.river.utils.KMIndex; |
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44 |
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45 public class BedloadKMChartService extends DefaultService { |
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46 |
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47 private static final long serialVersionUID = 4156704841305086495L; |
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48 |
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49 private static final Logger log = |
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50 Logger.getLogger(BedloadKMChartService.class); |
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51 |
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52 public static final int DEFAULT_WIDTH = 240; |
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53 public static final int DEFAULT_HEIGHT = 180; |
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54 |
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55 public static final String I18N_CHART_LABEL = |
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56 "bedload.km.chart.label"; |
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57 |
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58 public static final String DEFAULT_CHART_LABEL = |
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59 "Measuring Points"; |
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60 |
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61 public static final String I18N_CHART_TITLE = |
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62 "bedload.km.chart.title"; |
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63 |
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64 public static final String DEFAULT_CHART_TITLE = |
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65 "Measuring points"; |
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66 |
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67 public static final String I18N_KM_AXIS = |
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68 "bedload.km.chart.km.axis"; |
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69 |
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70 public static final String DEFAULT_KM_AXIS = |
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71 "km"; |
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72 |
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73 public static final String I18N_DATE_AXIS = |
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74 "bedload.km.chart.date.axis"; |
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75 |
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76 public static final String DEFAULT_DATE_AXIS = |
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77 "Date"; |
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78 |
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79 public static final String DEFAULT_FORMAT = "png"; |
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80 |
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81 // TODO: Load fancy image from resources. |
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82 public static final byte [] EMPTY = { |
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83 (byte)0x89, (byte)0x50, (byte)0x4e, (byte)0x47, |
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84 (byte)0x0d, (byte)0x0a, (byte)0x1a, (byte)0x0a, |
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85 (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x0d, |
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86 (byte)0x49, (byte)0x48, (byte)0x44, (byte)0x52, |
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95 (byte)0x00, (byte)0x09, (byte)0x70, (byte)0x48, |
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107 (byte)0x6d, (byte)0x6d, (byte)0x65, (byte)0x6e, |
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108 (byte)0x74, (byte)0x00, (byte)0xf6, (byte)0xcc, |
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109 (byte)0x96, (byte)0xbf, (byte)0x00, (byte)0x00, |
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110 (byte)0x00, (byte)0x0a, (byte)0x49, (byte)0x44, |
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111 (byte)0x41, (byte)0x54, (byte)0x08, (byte)0xd7, |
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112 (byte)0x63, (byte)0xf8, (byte)0x0f, (byte)0x00, |
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113 (byte)0x01, (byte)0x01, (byte)0x01, (byte)0x00, |
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114 (byte)0x1b, (byte)0xb6, (byte)0xee, (byte)0x56, |
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115 (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, |
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116 (byte)0x49, (byte)0x45, (byte)0x4e, (byte)0x44, |
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117 (byte)0xae, (byte)0x42, (byte)0x60, (byte)0x82 |
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118 }; |
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119 |
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120 private static final Output empty() { |
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121 return new Output(EMPTY, "image/png"); |
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122 } |
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123 |
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124 @Override |
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125 public Service.Output process( |
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126 Document data, |
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127 GlobalContext globalContext, |
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128 CallMeta callMeta |
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129 ) { |
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130 log.debug("SQKMChartService.process"); |
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131 |
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132 SedDBSessionHolder.acquire(); |
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133 try { |
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134 return doProcess(data, globalContext, callMeta); |
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135 } |
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136 finally { |
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137 SedDBSessionHolder.release(); |
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138 } |
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139 } |
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140 |
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141 protected Service.Output doProcess( |
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142 Document input, |
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143 GlobalContext globalContext, |
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144 CallMeta callMeta |
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145 ) { |
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146 String river = getRiverName(input); |
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147 Dimension extent = getExtent(input); |
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148 String format = getFormat(input); |
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149 |
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150 if (river == null) { |
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151 log.warn("River invalid."); |
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152 return empty(); |
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153 } |
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154 |
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155 BedloadOverview overview = BedloadOverviewFactory.getOverview(river); |
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156 |
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157 if (overview == null) { |
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158 log.warn("No overview found for river '" + river + "'"); |
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159 return empty(); |
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160 } |
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161 |
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162 KMIndex<List<Date>> entries = overview.filter(BedloadOverview.ACCEPT); |
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163 |
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164 JFreeChart chart = createChart(entries, river, callMeta); |
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165 |
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166 return encode(chart, extent, format); |
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167 } |
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168 |
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169 protected static Output encode( |
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170 JFreeChart chart, |
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171 Dimension extent, |
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172 String format |
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173 ) { |
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174 BufferedImage image = chart.createBufferedImage( |
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175 extent.width, extent.height, |
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176 Transparency.BITMASK, |
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177 null); |
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178 |
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179 ByteArrayOutputStream out = new ByteArrayOutputStream(); |
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180 |
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181 try { |
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182 ImageIO.write(image, format, out); |
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183 } |
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184 catch (IOException ioe) { |
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185 log.warn("writing image failed", ioe); |
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186 return empty(); |
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187 } |
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188 |
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189 return new Output(out.toByteArray(), "image/" + format); |
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190 } |
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191 |
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192 protected static JFreeChart createChart( |
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193 KMIndex<List<Date>> entries, |
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194 String river, |
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195 CallMeta callMeta |
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196 ) { |
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197 |
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198 XYSeriesCollection dataset = new XYSeriesCollection(); |
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199 String key = Resources.format( |
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200 callMeta, I18N_CHART_LABEL, DEFAULT_CHART_LABEL, river); |
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201 |
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202 XYSeries series = new XYSeries(key); |
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203 for (KMIndex.Entry<List<Date>> e: entries) { |
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204 double km = e.getKm(); |
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205 List<Date> ds = e.getValue(); |
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206 for (Date d: ds) { |
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207 series.add(km, d.getTime()); |
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208 } |
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209 } |
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210 |
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211 dataset.addSeries(series); |
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212 String title = Resources.format( |
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213 callMeta, I18N_CHART_TITLE, DEFAULT_CHART_TITLE, river); |
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214 |
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215 String kmAxis = Resources.getMsg( |
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216 callMeta, I18N_KM_AXIS, DEFAULT_KM_AXIS); |
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217 |
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218 String dateAxis = Resources.getMsg( |
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219 callMeta, I18N_DATE_AXIS, DEFAULT_DATE_AXIS); |
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220 |
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221 JFreeChart chart = ChartFactory.createXYLineChart( |
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222 title, |
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223 kmAxis, |
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224 dateAxis, |
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225 null, |
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226 PlotOrientation.VERTICAL, |
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227 true, |
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228 true, |
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229 false); |
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230 |
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231 XYPlot plot = (XYPlot)chart.getPlot(); |
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232 |
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233 DateAxis dA = new DateAxis(); |
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234 plot.setRangeAxis(dA); |
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235 plot.setDataset(0, dataset); |
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236 |
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237 chart.setBackgroundPaint(Color.white); |
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238 plot.setBackgroundPaint(Color.white); |
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239 plot.setDomainGridlinePaint(Color.gray); |
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240 plot.setRangeGridlinePaint(Color.gray); |
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241 plot.setDomainGridlinesVisible(true); |
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242 plot.setRangeGridlinesVisible(true); |
8856 | 243 XYLineAndShapeRenderer renderer = |
244 (XYLineAndShapeRenderer)plot.getRenderer(); | |
3751
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245 |
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246 renderer.setSeriesPaint(0, Color.gray); |
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247 renderer.setSeriesLinesVisible(0, false); |
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248 renderer.setSeriesShapesVisible(0, true); |
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249 renderer.setDrawOutlines(true); |
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250 return chart; |
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251 } |
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252 |
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253 |
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254 protected static String getRiverName(Document input) { |
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255 NodeList rivers = input.getElementsByTagName("river"); |
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256 |
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257 if (rivers.getLength() == 0) { |
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258 return null; |
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259 } |
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260 |
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261 String river = ((Element)rivers.item(0)).getAttribute("name"); |
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262 |
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263 return river.length() > 0 ? river : null; |
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264 } |
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265 |
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266 protected static Dimension getExtent(Document input) { |
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267 |
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268 int width = DEFAULT_WIDTH; |
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269 int height = DEFAULT_HEIGHT; |
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270 |
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271 NodeList extents = input.getElementsByTagName("extent"); |
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272 |
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273 if (extents.getLength() > 0) { |
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274 Element element = (Element)extents.item(0); |
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275 String w = element.getAttribute("width"); |
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276 String h = element.getAttribute("height"); |
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277 |
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278 try { |
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279 width = Math.max(1, Integer.parseInt(w)); |
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280 } |
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281 catch (NumberFormatException nfe) { |
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282 log.warn("width '" + w + "' is not a valid."); |
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283 } |
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284 |
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285 try { |
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286 height = Math.max(1, Integer.parseInt(h)); |
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287 } |
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288 catch (NumberFormatException nfe) { |
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289 log.warn("height '" + h + "' is not a valid"); |
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290 } |
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291 } |
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292 |
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293 return new Dimension(width, height); |
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294 } |
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295 |
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296 protected static String getFormat(Document input) { |
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297 String format = DEFAULT_FORMAT; |
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298 |
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299 NodeList formats = input.getElementsByTagName("format"); |
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300 |
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301 if (formats.getLength() > 0) { |
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302 String type = ((Element)formats.item(0)).getAttribute("type"); |
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303 if (type.length() > 0) { |
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304 format = type; |
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305 } |
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306 } |
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307 |
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308 return format; |
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309 } |
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310 } |