Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/exports/DischargeCurveGenerator.java @ 299:8940b0885865
Added a DischargeCurveGenerator that creates discharge curves.
flys-artifacts/trunk@1648 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Wed, 06 Apr 2011 09:56:38 +0000 |
parents | |
children | 635af5381a4d |
rev | line source |
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299
8940b0885865
Added a DischargeCurveGenerator that creates discharge curves.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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1 package de.intevation.flys.exports; |
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2 |
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3 import java.awt.Color; |
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4 import java.io.IOException; |
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5 import java.io.OutputStream; |
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6 import java.util.ArrayList; |
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7 import java.util.List; |
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8 import java.util.Map; |
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9 |
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10 import org.apache.log4j.Logger; |
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11 |
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12 import org.w3c.dom.Document; |
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13 |
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14 import org.jfree.data.xy.DefaultXYDataset; |
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15 |
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16 import org.jfree.chart.ChartFactory; |
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17 import org.jfree.chart.JFreeChart; |
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18 import org.jfree.chart.plot.PlotOrientation; |
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19 |
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20 import de.intevation.artifacts.Artifact; |
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21 import de.intevation.artifacts.CallContext; |
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22 |
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23 import de.intevation.flys.model.Gauge; |
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24 |
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25 import de.intevation.flys.artifacts.FLYSArtifact; |
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26 import de.intevation.flys.artifacts.model.DischargeTables; |
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27 import de.intevation.flys.artifacts.model.GaugesFactory; |
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28 import de.intevation.flys.exports.ChartExportHelper; |
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29 |
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30 |
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31 /** |
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32 * An OutGenerator that generates discharge curves. |
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33 * |
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34 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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35 */ |
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36 public class DischargeCurveGenerator implements OutGenerator { |
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37 |
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38 /** The logger used in this generator.*/ |
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39 private static Logger logger = |
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40 Logger.getLogger(DischargeCurveGenerator.class); |
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41 |
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42 /** The document of the incoming out() request.*/ |
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43 protected Document request; |
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44 |
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45 /** The output stream where the data should be written to.*/ |
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46 protected OutputStream out; |
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47 |
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48 /** The CallContext object.*/ |
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49 protected CallContext context; |
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50 |
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51 /** The Dataset that contains the data for the chart.*/ |
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52 protected DefaultXYDataset dataset; |
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53 |
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54 |
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55 public DischargeCurveGenerator() { |
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56 } |
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57 |
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58 |
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59 public void init(Document request, OutputStream out, CallContext context) { |
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60 logger.debug("DischargeCurveGenerator.init"); |
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61 |
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62 this.request = request; |
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63 this.out = out; |
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64 this.context = context; |
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65 |
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66 this.dataset = new DefaultXYDataset(); |
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67 } |
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68 |
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69 |
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70 public void doOut(Artifact artifact, Document attr) { |
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71 logger.debug("DischargeCurveGenerator.doOut"); |
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72 |
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73 if (!(artifact instanceof FLYSArtifact)) { |
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74 logger.error("Artifact is no instance of FLYSArtifact."); |
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75 return; |
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76 } |
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77 |
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78 FLYSArtifact flysArtifact = (FLYSArtifact) artifact; |
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79 |
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80 String river = (String) flysArtifact.getData("river").getValue(); |
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81 String from = (String) flysArtifact.getData("ld_from").getValue(); |
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82 String to = (String) flysArtifact.getData("ld_to").getValue(); |
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83 |
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84 double f = Double.parseDouble(from); |
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85 double t = Double.parseDouble(to); |
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86 |
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87 List<double[]> ranges = new ArrayList<double[]>(); |
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88 ranges.add(new double [] { f, t }); |
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89 |
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90 List<Gauge> gauges = GaugesFactory.getGauges(river); |
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91 List<Gauge> filtered = GaugesFactory.filterRanges(gauges, ranges); |
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92 |
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93 if (logger.isDebugEnabled()) { |
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94 int numGauges = gauges != null ? gauges.size() : 0; |
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95 int numFiltered = filtered != null ? filtered.size() : 0; |
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96 |
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97 logger.debug("++++++++++++++++++++"); |
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98 logger.debug("Search gauges for river: " + river); |
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99 logger.debug("-> ... from range: " + from); |
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100 logger.debug("-> ... to range: " + to); |
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101 logger.debug("-> Found " + numGauges + " gauges in total."); |
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102 logger.debug("-> Found " + numFiltered + " gauges after filtering."); |
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103 logger.debug("++++++++++++++++++++"); |
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104 } |
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105 |
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106 String[] gaugeNames = new String[filtered.size()]; |
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107 int idx = 0; |
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108 for (Gauge gauge: filtered) { |
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109 gaugeNames[idx++] = gauge.getName(); |
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110 } |
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111 |
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112 DischargeTables dt = new DischargeTables(river, gaugeNames); |
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113 Map<String, double[][]> gaugeValues = dt.getValues(100d); |
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114 |
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115 for (String gauge: gaugeNames) { |
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116 double[][] values = gaugeValues.get(gauge); |
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117 dataset.addSeries(gauge, values); |
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118 } |
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119 |
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120 } |
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121 |
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122 |
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123 public void generate() |
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124 throws IOException |
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125 { |
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126 logger.debug("DischargeCurveGenerator.generate"); |
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127 |
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128 JFreeChart chart = ChartFactory.createXYLineChart( |
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129 "Abflusskurven", |
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130 "Q", "W", |
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131 dataset, |
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132 PlotOrientation.VERTICAL, |
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133 true, |
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134 false, |
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135 false); |
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136 |
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137 chart.setBackgroundPaint(Color.WHITE); |
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138 chart.getPlot().setBackgroundPaint(Color.WHITE); |
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139 |
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140 ChartExportHelper.exportImage( |
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141 out, |
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142 chart, |
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143 "png", |
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144 600, 400); |
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145 } |
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146 } |
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147 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |