Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/exports/DischargeCurveGenerator.java @ 348:635af5381a4d

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Added an abstract OutGenerator that should be the base class for all generators which create charts. flys-artifacts/trunk@1750 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 27 Apr 2011 14:40:44 +0000
parents 8940b0885865
children 8830eecad69e
rev   line source
299
8940b0885865 Added a DischargeCurveGenerator that creates discharge curves.
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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.util.ArrayList;
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6 import java.util.List;
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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.w3c.dom.Document;
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12
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13 import org.jfree.data.xy.DefaultXYDataset;
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14
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15 import org.jfree.chart.ChartFactory;
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16 import org.jfree.chart.JFreeChart;
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17 import org.jfree.chart.plot.PlotOrientation;
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18
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19 import de.intevation.artifacts.Artifact;
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20
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21 import de.intevation.flys.model.Gauge;
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22
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23 import de.intevation.flys.artifacts.FLYSArtifact;
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24 import de.intevation.flys.artifacts.model.DischargeTables;
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25 import de.intevation.flys.artifacts.model.GaugesFactory;
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26 import de.intevation.flys.exports.ChartExportHelper;
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27
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28
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29 /**
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30 * An OutGenerator that generates discharge curves.
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31 *
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32 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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33 */
348
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34 public class DischargeCurveGenerator extends ChartGenerator {
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35
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36 /** The logger used in this generator.*/
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37 private static Logger logger =
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38 Logger.getLogger(DischargeCurveGenerator.class);
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39
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40
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41 /** The Dataset that contains the data for the chart.*/
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42 protected DefaultXYDataset dataset;
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43
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44
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45 public DischargeCurveGenerator() {
348
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46 super();
299
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47
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48 this.dataset = new DefaultXYDataset();
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49 }
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50
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51
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52 public void doOut(Artifact artifact, Document attr) {
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53 logger.debug("DischargeCurveGenerator.doOut");
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54
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55 if (!(artifact instanceof FLYSArtifact)) {
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56 logger.error("Artifact is no instance of FLYSArtifact.");
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57 return;
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58 }
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59
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60 FLYSArtifact flysArtifact = (FLYSArtifact) artifact;
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61
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62 String river = (String) flysArtifact.getData("river").getValue();
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63 String from = (String) flysArtifact.getData("ld_from").getValue();
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64 String to = (String) flysArtifact.getData("ld_to").getValue();
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65
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66 double f = Double.parseDouble(from);
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67 double t = Double.parseDouble(to);
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68
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69 List<double[]> ranges = new ArrayList<double[]>();
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70 ranges.add(new double [] { f, t });
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71
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72 List<Gauge> gauges = GaugesFactory.getGauges(river);
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73 List<Gauge> filtered = GaugesFactory.filterRanges(gauges, ranges);
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74
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75 if (logger.isDebugEnabled()) {
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76 int numGauges = gauges != null ? gauges.size() : 0;
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77 int numFiltered = filtered != null ? filtered.size() : 0;
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78
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79 logger.debug("++++++++++++++++++++");
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80 logger.debug("Search gauges for river: " + river);
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81 logger.debug("-> ... from range: " + from);
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82 logger.debug("-> ... to range: " + to);
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83 logger.debug("-> Found " + numGauges + " gauges in total.");
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84 logger.debug("-> Found " + numFiltered + " gauges after filtering.");
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85 logger.debug("++++++++++++++++++++");
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86 }
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87
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88 String[] gaugeNames = new String[filtered.size()];
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89 int idx = 0;
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90 for (Gauge gauge: filtered) {
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91 gaugeNames[idx++] = gauge.getName();
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92 }
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93
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94 DischargeTables dt = new DischargeTables(river, gaugeNames);
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95 Map<String, double[][]> gaugeValues = dt.getValues(100d);
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96
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97 for (String gauge: gaugeNames) {
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98 double[][] values = gaugeValues.get(gauge);
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99 dataset.addSeries(gauge, values);
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100 }
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101
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102 }
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103
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104
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105 public void generate()
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106 throws IOException
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107 {
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108 logger.debug("DischargeCurveGenerator.generate");
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109
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110 JFreeChart chart = ChartFactory.createXYLineChart(
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111 "Abflusskurven",
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112 "Q", "W",
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113 dataset,
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114 PlotOrientation.VERTICAL,
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115 true,
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116 false,
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117 false);
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118
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119 chart.setBackgroundPaint(Color.WHITE);
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120 chart.getPlot().setBackgroundPaint(Color.WHITE);
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121
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122 ChartExportHelper.exportImage(
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123 out,
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124 chart,
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125 "png",
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126 600, 400);
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127 }
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128 }
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129 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org