Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/chart/TimeSeriesChart.java @ 298:80f7c5dc09c6

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Implementation of classes for creating timeseries, verticalprofile and horizontalprofile charts. gnv-artifacts/trunk@352 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 19 Nov 2009 15:30:27 +0000
parents
children 45625b5cd6d4
rev   line source
298
80f7c5dc09c6 Implementation of classes for creating timeseries, verticalprofile and horizontalprofile charts.
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1 package de.intevation.gnv.chart;
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2
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3 import java.util.Collection;
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4 import java.util.Iterator;
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5 import java.util.Locale;
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6
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7 import org.apache.log4j.Logger;
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8
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9 import org.jfree.chart.ChartTheme;
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10 import org.jfree.chart.plot.XYPlot;
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11 import org.jfree.chart.plot.PlotOrientation;
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12 import org.jfree.data.general.Series;
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13 import org.jfree.data.time.TimeSeries;
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14 import org.jfree.data.time.Minute;
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15 import org.jfree.data.time.TimeSeriesCollection;
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16
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17 import de.intevation.gnv.geobackend.base.Result;
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18
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19
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20 /**
80f7c5dc09c6 Implementation of classes for creating timeseries, verticalprofile and horizontalprofile charts.
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21 * @author Ingo Weinzierl <ingo.weinzierl@intevation.de>
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22 */
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23 public class TimeSeriesChart
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24 extends AbstractXYLineChart
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25 {
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26
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27 private static Logger log = Logger.getLogger(TimeSeriesChart.class);
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29
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30 public TimeSeriesChart(
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31 ChartLabels labels,
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32 ChartTheme theme,
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33 Collection parameters,
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34 Collection measurements,
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35 Collection result,
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36 Collection dates,
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37 Locale locale
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38 ) {
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39 this.labels = labels;
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40 this.theme = theme;
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41 this.parameters = parameters;
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42 this.measurements = measurements;
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43 this.resultSet = result;
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44 this.dates = dates;
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45 this.locale = locale;
80f7c5dc09c6 Implementation of classes for creating timeseries, verticalprofile and horizontalprofile charts.
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46 this.PLOT_ORIENTATION = PlotOrientation.VERTICAL;
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47 }
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48
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49
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50 protected void initData() {
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51 log.debug("init data for timeseries chart");
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52
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53 String breakPoint1 = null;
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54 String breakPoint2 = null;
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55 String breakPoint3 = null;
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56
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57 Iterator iter = resultSet.iterator();
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58 Result row = null;
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59 String seriesName = null;
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60 TimeSeries series = null;
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61
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62 int idx = 0;
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63
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64 while (iter.hasNext()) {
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65 row = (Result) iter.next();
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66
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67 // add current data to plot and prepare for next one
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68 if (!row.getString("GROUP1").equals(breakPoint1) ||
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69 !row.getString("GROUP2").equals(breakPoint2) ||
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70 !row.getString("GROUP3").equals(breakPoint3)
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71 ) {
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72 log.debug("prepare data/plot for next dataset");
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73
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74 if(series != null) {
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75 addSeries(series, idx);
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76 prepareAxis(((String)series.getKey()), idx++);
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77 }
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78
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79 // prepare variables for next plot
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80 breakPoint1 = row.getString("GROUP1");
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81 breakPoint2 = row.getString("GROUP2");
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82 breakPoint3 = row.getString("GROUP3");
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83
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84 seriesName = createSeriesName(
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85 breakPoint1,
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86 breakPoint2,
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87 breakPoint3
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88 );
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89
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90 log.debug("next dataset is '" + seriesName + "'");
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91 series = new TimeSeries(seriesName, Minute.class);
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92 }
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93
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94 addValue(row, series);
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95 }
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96
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97 // add the last dataset if existing to plot and prepare its axis
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98 addSeries(series, idx);
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99 prepareAxis(((String)series.getKey()), idx++);
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100 }
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101
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102
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103 protected void addValue(Result row, Series series) {
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104 // TODO look for gaps between two values
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105 ((TimeSeries) series).addOrUpdate(
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106 new Minute(row.getDate("XORDINATE")),
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107 row.getDouble("YORDINATE")
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108 );
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109 }
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110
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111
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112 protected void addSeries(Series series, int idx) {
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113 log.debug("add series to timeseries chart");
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114 XYPlot plot = chart.getXYPlot();
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115
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116 if (series == null) {
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117 log.warn("no data to add");
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118 return;
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119 }
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120
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121 TimeSeriesCollection tsc = new TimeSeriesCollection((TimeSeries)series);
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122 plot.setDataset(idx, tsc);
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123 }
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124
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125
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126 protected String createSeriesName(
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127 String breakPoint1,
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128 String breakPoint2,
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129 String breakPoint3
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130 ) {
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131 log.debug("create seriesname of timeseries chart");
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132 return findValueTitle(parameters, breakPoint1) +
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133 " " +
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134 findValueTitle(measurements, breakPoint2) +
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135 "m";
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136 }
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137 }
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138 // vim:set ts=4 sw=4 si et sta sts=4 fenc=latin1 :
http://dive4elements.wald.intevation.org