Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/chart/TimeSeriesChart.java @ 330:477c0c46605e

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Cleaned up ChangeLog a bit. gnv-artifacts/trunk@396 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 04 Dec 2009 09:04:10 +0000
parents 42a5269636eb
children 19571fd1d0e8
rev   line source
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1 package de.intevation.gnv.chart;
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2
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3 import java.text.DateFormat;
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4 import java.text.SimpleDateFormat;
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5 import java.util.Collection;
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6 import java.util.Date;
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7 import java.util.Iterator;
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8 import java.util.Locale;
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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.jfree.chart.ChartTheme;
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13 import org.jfree.chart.ChartFactory;
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14 import org.jfree.chart.JFreeChart;
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15 import org.jfree.chart.axis.Axis;
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16 import org.jfree.chart.axis.DateAxis;
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17 import org.jfree.chart.plot.XYPlot;
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18 import org.jfree.chart.plot.PlotOrientation;
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19 import org.jfree.data.general.Series;
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20 import org.jfree.data.time.TimeSeries;
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21 import org.jfree.data.time.Minute;
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22 import org.jfree.data.time.TimeSeriesCollection;
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23
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24 import de.intevation.gnv.geobackend.base.Result;
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25 import de.intevation.gnv.timeseries.gap.TimeGap;
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27
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28 /**
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29 * @author Ingo Weinzierl <ingo.weinzierl@intevation.de>
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30 */
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31 public class TimeSeriesChart
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32 extends AbstractXYLineChart
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33 {
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34
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35 private static final String DATE_FORMAT = "dd-MMM";
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36
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37 private static final long NO_TIME_GAP = Long.MAX_VALUE - 1000;
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38
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39 private static Logger log = Logger.getLogger(TimeSeriesChart.class);
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42 public TimeSeriesChart(
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43 ChartLabels labels,
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44 ChartTheme theme,
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45 Collection parameters,
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46 Collection measurements,
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47 Collection dates,
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48 Collection result,
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49 Collection timeGaps,
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50 Locale locale,
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51 boolean linesVisible,
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52 boolean shapesVisible
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53 ) {
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54 this.labels = labels;
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55 this.theme = theme;
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56 this.parameters = parameters;
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57 this.measurements = measurements;
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58 this.dates = dates;
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59 this.resultSet = result;
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60 this.timeGaps = timeGaps;
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61 this.locale = locale;
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62 this.PLOT_ORIENTATION = PlotOrientation.VERTICAL;
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63 this.linesVisible = linesVisible;
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64 this.shapesVisible = shapesVisible;
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65 }
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66
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67
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68 public JFreeChart generateChart() {
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69 log.debug("generate timeseries chart");
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70
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71 if (chart != null)
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72 return chart;
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73
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74 chart = ChartFactory.createTimeSeriesChart(
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75 labels.getTitle(),
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76 labels.getDomainAxisLabel(),
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77 null,
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78 null,
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79 true,
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80 false,
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81 false
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82 );
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83
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84 theme.apply(chart);
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85 initData();
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86
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87 return chart;
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88 }
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89
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90
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91 protected void initData() {
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92 log.debug("init data for timeseries chart");
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93
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94 String breakPoint1 = null;
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95 String breakPoint2 = null;
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96 String breakPoint3 = null;
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97
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98 Iterator iter = resultSet.iterator();
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99 Result row = null;
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100 String seriesName = null;
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101 TimeSeries series = null;
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102
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103 int idx = 0;
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104 int startPos = 0;
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105 int endPos = 0;
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106 Date startDate = null;
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107 Date endDate = null;
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108
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109 Result[] results =
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110 (Result[]) resultSet.toArray(new Result[resultSet.size()]);
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111
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112 while (iter.hasNext()) {
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113 row = (Result) iter.next();
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114
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115 // add current data to plot and prepare for next one
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116 if (!row.getString("GROUP1").equals(breakPoint1) ||
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117 !row.getString("GROUP2").equals(breakPoint2) ||
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118 !row.getString("GROUP3").equals(breakPoint3)
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119 ) {
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120 log.debug("prepare data/plot for next dataset");
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121
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122 if(series != null) {
329
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123 // add gaps before adding series to chart
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124 startDate = results[startPos].getDate("XORDINATE");
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125 endDate = results[endPos-1].getDate("XORDINATE");
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126 addGaps(results,series,startDate,endDate,startPos,endPos);
298
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127 addSeries(series, idx);
329
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128
327
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129 prepareAxis(((String)series.getKey()), idx);
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130 adjustRenderer(idx++, linesVisible, shapesVisible);
329
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131 startPos = endPos + 1;
298
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132 }
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133
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134 // prepare variables for next plot
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135 breakPoint1 = row.getString("GROUP1");
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136 breakPoint2 = row.getString("GROUP2");
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137 breakPoint3 = row.getString("GROUP3");
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138
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139 seriesName = createSeriesName(
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140 breakPoint1,
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141 breakPoint2,
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142 breakPoint3
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143 );
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144
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145 log.debug("next dataset is '" + seriesName + "'");
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146 series = new TimeSeries(seriesName, Minute.class);
329
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147
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148 // set values of start date and start position in collection for
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149 // next parameter
298
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150 }
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151
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152 addValue(row, series);
329
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153 endPos++;
298
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154 }
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155
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156 // add the last dataset if existing to plot and prepare its axis
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157 startDate = results[startPos].getDate("XORDINATE");
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158 endDate = results[endPos-1].getDate("XORDINATE");
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159 addGaps(results, series, startDate, endDate, startPos, endPos);
298
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160 addSeries(series, idx);
310
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161
327
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162 if (series != null) {
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163 prepareAxis(((String)series.getKey()), idx);
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164 adjustRenderer(idx++, linesVisible, shapesVisible);
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165 }
298
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166 }
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167
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168
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169 protected void addValue(Result row, Series series) {
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170 ((TimeSeries) series).addOrUpdate(
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171 new Minute(row.getDate("XORDINATE")),
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172 row.getDouble("YORDINATE")
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173 );
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174 }
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175
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176
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177 protected void addSeries(Series series, int idx) {
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178 log.debug("add series to timeseries chart");
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179 XYPlot plot = chart.getXYPlot();
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180
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181 if (series == null) {
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182 log.warn("no data to add");
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183 return;
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184 }
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185
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186 TimeSeriesCollection tsc = new TimeSeriesCollection((TimeSeries)series);
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187 plot.setDataset(idx, tsc);
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188 }
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189
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190
315
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191 protected void localizeDomainAxis(Axis axis, Locale locale) {
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192 if (locale == null)
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193 return;
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194
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195 log.debug(
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196 "Set language of axis [" + axis.getLabel() + "] " +
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197 "to " + locale.toString()
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198 );
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199
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200 DateFormat format = new SimpleDateFormat(DATE_FORMAT, locale);
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201 ((DateAxis) axis).setDateFormatOverride(format);
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202 }
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203
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204
298
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205 protected String createSeriesName(
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206 String breakPoint1,
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207 String breakPoint2,
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208 String breakPoint3
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209 ) {
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210 log.debug("create seriesname of timeseries chart");
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211 return findValueTitle(parameters, breakPoint1) +
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212 " " +
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213 findValueTitle(measurements, breakPoint2) +
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214 "m";
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215 }
329
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216
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217
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218 protected void addGaps(
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219 Result[] results,
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220 Series series,
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221 Date startDate,
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222 Date endDate,
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223 int startPos,
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224 int endPos
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225 ) {
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226 int gapID = results[startPos].getInteger("GAPID");
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227 long maxDiff = calculateGapSize(
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228 startDate, endDate, startPos, endPos, gapID
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229 );
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230
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231 Date last = startDate;
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232 for (int i = startPos+1; i < endPos; i++) {
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233 Result res = results[i];
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234 Date now = res.getDate("XORDINATE");
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235
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236 if ((now.getTime() - last.getTime()) > maxDiff) {
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237 // add gap, add 1 minute to last date and add null value
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238 log.info(
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239 "Gap between " +
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240 last.toString() + " and " + now.toString()
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241 );
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242 last.setTime(last.getTime() + 60000);
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243 ((TimeSeries) series).addOrUpdate(new Minute(last), null);
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244 }
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245
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246 last = now;
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247 }
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248 }
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249
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250
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251 protected long calculateGapSize(
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252 Date start,
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253 Date end,
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254 int startPos,
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255 int endPos,
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256 int gapID
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257 ){
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258 long maxGap = (end.getTime() - start.getTime()) / 20;
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259 long interval = getTimeGapValue(start, end, startPos, endPos, gapID);
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260
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261 if (maxGap < interval)
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262 maxGap = interval + 10;
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263
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264 return maxGap;
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265 }
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266
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267
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268 protected long getTimeGapValue(
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269 Date dStart,
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270 Date dEnd,
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271 int pStart,
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272 int pEnd,
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273 int gapID
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274 ){
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275 long gap = 0;
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276
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277 if (gapID < 0 || gapID >= 99) {
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278
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279 if (gapID == -1) {
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280 // no gaps in meshes
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281 gap = NO_TIME_GAP;
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282 }
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283 else if (pEnd-pStart < 60) {
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284 gap = (3/(pEnd-pStart)) * (dEnd.getTime() - dStart.getTime());
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285 }
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286 }
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287 else{
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288 Iterator it = timeGaps.iterator();
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289
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290 while (it.hasNext()) {
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291 TimeGap tempTimeGap = (TimeGap) it.next();
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292
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293 if (tempTimeGap.getKey() == gapID){
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294 String unit = tempTimeGap.getUnit();
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295 int gapValue = tempTimeGap.getValue();
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296
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297 if (unit.equals(TimeGap.TIME_UNIT_MINUTE)) {
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298 gap = gapValue * TimeGap.MINUTE_IN_MILLIS;
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299 }
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300 else if (unit.equals(TimeGap.TIME_UNIT_HOUR)) {
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301 gap = gapValue * TimeGap.HOUR_IN_MILLIS;
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302 }
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303 else if (unit.equals(TimeGap.TIME_UNIT_DAY)) {
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304 gap = gapValue * TimeGap.DAY_IN_MILLIS;
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305 }
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306 else if (unit.equals(TimeGap.TIME_UNIT_WEEK)) {
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307 gap = gapValue * TimeGap.WEEK_IN_MILLIS;
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308 }
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309 else if (unit.equals(TimeGap.TIME_UNIT_MONTH)) {
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310 gap = gapValue * (TimeGap.DAY_IN_MILLIS *30);
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311 }
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312 else if (unit.equals(TimeGap.TIME_UNIT_YEAR)) {
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313 gap = gapValue * (TimeGap.DAY_IN_MILLIS *365);
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314 }
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315 break;
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316 }
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317 }
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318 }
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319
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320 return gap;
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321 }
298
80f7c5dc09c6 Implementation of classes for creating timeseries, verticalprofile and horizontalprofile charts.
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322 }
315
63f8b3fb7d9a Localization of chart axis with locale which fits best to server and browser settings.
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323 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org