Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/chart/HorizontalProfileChart.java @ 1038:9981452c7e75
First step: Added a new state handling the selection between vector or scalar and a new transition in timeseries to provide vector values (issue27).
gnv-artifacts/trunk@1110 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Tue, 18 May 2010 16:28:05 +0000 |
parents | 38c8cc586a85 |
children | 778d86255d76 |
rev | line source |
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1 package de.intevation.gnv.chart; |
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2 |
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3 import com.vividsolutions.jts.geom.Point; |
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4 |
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5 import com.vividsolutions.jts.io.ParseException; |
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6 import com.vividsolutions.jts.io.WKTReader; |
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7 |
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8 import de.intevation.gnv.geobackend.base.Result; |
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9 |
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10 import de.intevation.gnv.utils.DistanceCalculator; |
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11 |
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12 import java.util.Collection; |
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13 import java.util.Locale; |
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14 import java.util.Map; |
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15 |
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16 import org.apache.log4j.Logger; |
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17 |
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18 import org.jfree.chart.ChartTheme; |
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19 |
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20 import org.jfree.chart.axis.Axis; |
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21 import org.jfree.chart.axis.AxisLocation; |
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22 import org.jfree.chart.axis.NumberAxis; |
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23 import org.jfree.chart.axis.NumberTickUnit; |
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24 |
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25 import org.jfree.chart.plot.PlotOrientation; |
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26 import org.jfree.chart.plot.XYPlot; |
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27 |
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28 import org.jfree.data.Range; |
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29 |
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30 import org.jfree.data.general.Series; |
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31 |
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32 import org.jfree.data.xy.XYSeries; |
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33 |
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34 /** |
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35 * This class is used to create xy-charts of horizontal profiles. |
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36 * |
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37 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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38 */ |
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39 public class HorizontalProfileChart |
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40 extends VerticalProfileChart |
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41 { |
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42 /** |
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43 * Logger used for logging with log4j. |
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44 */ |
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45 private static Logger log = Logger.getLogger(HorizontalProfileChart.class); |
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46 |
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47 /** |
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48 * <code>WKTReader</code> used to turn wkt strings into geometries. |
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49 */ |
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50 private static WKTReader wktReader = new WKTReader(); |
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51 |
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52 /** |
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53 * The first point in a HorizontalProfileChart. It is used to calculate the |
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54 * distance between the currently processed point an the start. |
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55 */ |
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56 private Point firstPoint; |
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57 |
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58 /** |
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59 * Constructor used to create horizontal profile charts. |
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60 * |
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61 * @param labels Labels used to be displayed in title, subtitle and so on. |
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62 * @param theme ChartTheme used to adjust the rendering of this chart. |
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63 * @param parameters Collection containing a bunch of parameters. |
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64 * @param measurements Collection containing a bunch of measurements. |
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65 * @param dates Collection containing a bunch of date objects. |
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66 * @param result Collection containing a bunch of <code>Result</code> |
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67 * objects which contain the actual data items to be displayed. |
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68 * @param timeGaps Collection with timegap definitions. |
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69 * @param locale Locale used to specify the format of labels, numbers, ... |
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70 * @param linesVisible Render lines between data points if true, otherwise |
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71 * not. |
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72 * @param shapesVisible Render vertices as points if true, otherwise not. |
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73 */ |
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74 public HorizontalProfileChart( |
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75 ChartLabels labels, |
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76 ChartTheme theme, |
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77 Collection parameters, |
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78 Collection measurements, |
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79 Collection dates, |
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80 Collection result, |
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81 Collection timeGaps, |
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82 Locale locale, |
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83 boolean linesVisible, |
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84 boolean shapesVisible |
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85 ) { |
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86 super( |
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87 labels, |
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88 theme, |
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89 parameters, |
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90 measurements, |
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91 dates, |
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92 result, |
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93 timeGaps, |
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94 locale, |
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95 linesVisible, |
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96 shapesVisible |
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97 ); |
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98 this.PLOT_ORIENTATION = PlotOrientation.VERTICAL; |
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99 } |
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100 |
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101 |
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102 @Override |
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103 protected Object getValue(Result row) { |
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104 try { |
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105 return (Point) wktReader.read(row.getString("SHAPE")); |
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106 } |
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107 catch(ParseException pe) { |
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108 log.warn("No data found while parsing."); |
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109 return null; |
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110 } |
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111 } |
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112 |
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113 |
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114 @Override |
340
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115 protected void gapDetection( |
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116 Result[] results, |
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117 Series series, |
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118 int startPos, |
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119 int endPos |
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120 ) { |
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121 log.debug("Start gap detection."); |
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122 try { |
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123 Point startValue = getPoint(results[startPos]); |
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124 Point endValue = getPoint(results[endPos-1]); |
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125 if (results[0].getInteger("DATAID") == 2) |
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126 addGapsOnGrid(results, series, startPos, endPos); |
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127 else |
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128 addGaps( |
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129 results, |
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130 series, |
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131 startValue, |
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132 endValue, |
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133 startPos, |
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134 endPos |
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135 ); |
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136 } |
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137 catch (ParseException pe) { |
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138 log.warn( |
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139 "Error while parsing points for gap detection. " + |
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140 "No gaps for current series will be detected." |
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141 ); |
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142 } |
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143 |
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144 log.debug("Gap detection finished."); |
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145 } |
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146 |
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147 |
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148 @Override |
298
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149 protected void addValue(Result row, Series series) { |
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150 double distance = 0; |
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151 |
298
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152 try { |
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153 Point point = (Point) wktReader.read(row.getString("SHAPE")); |
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154 if (firstPoint != null) { |
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155 distance = DistanceCalculator.calculateDistance( |
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156 firstPoint, point |
298
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157 ); |
644
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158 } |
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159 else { |
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160 firstPoint = point; |
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161 } |
298
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162 |
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163 ((XYSeries) series).add( |
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164 distance, |
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165 row.getDouble("YORDINATE") |
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166 ); |
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167 } |
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168 catch(ParseException pe) { |
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169 log.warn("No data found while parsing."); |
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170 } |
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171 } |
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172 |
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173 |
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174 @Override |
334
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175 protected void addSeries(Series series, String label, int idx) { |
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176 super.addSeries(series, label, idx); |
298
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177 |
644
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178 // reset firstPoint for next series |
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179 firstPoint = null; |
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180 } |
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181 |
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182 |
656
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183 @Override |
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184 protected void prepareAxis(String seriesKey,int idx) { |
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185 log.debug("prepare axis of xychart"); |
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186 |
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187 XYPlot plot = chart.getXYPlot(); |
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188 Axis xAxis = plot.getDomainAxis(); |
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189 NumberAxis yAxis = new NumberAxis(seriesKey); |
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190 |
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191 localizeDomainAxis(xAxis, locale); |
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|
192 localizeRangeAxis(yAxis, locale); |
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193 |
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194 // litte workarround to adjust the max range of axes. |
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195 // NumberAxis.setAutoRange(true) doesn't seem to work properly. |
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196 Range yRange = (Range) ranges.get(seriesKey); |
849
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197 double lo = yRange.getLowerBound(); |
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198 double hi = yRange.getUpperBound(); |
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199 |
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200 // XXX Special case: only a single value in this chart. |
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201 // JFreeChart doesn't expand this range, because its length is 0. |
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202 if (lo == hi) { |
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203 yRange = new Range( |
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204 lo - (lo / 100 * LOWER_MARGIN), |
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|
205 hi + (hi / 100 * UPPER_MARGIN)); |
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206 } |
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207 else { |
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208 yRange = Range.expand(yRange, LOWER_MARGIN, UPPER_MARGIN); |
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209 } |
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210 |
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211 yAxis.setRange(yRange); |
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212 log.debug("Max Range of dataset is: " + yRange.toString()); |
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213 |
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214 if (seriesKey.contains("richtung")) { |
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215 yAxis.setTickUnit(new NumberTickUnit(30.0)); |
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216 yAxis.setUpperBound(360.0); |
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217 yAxis.setLowerBound(0.0); |
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218 } |
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219 else { |
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220 yAxis.setFixedDimension(10.0); |
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221 yAxis.setAutoRangeIncludesZero(false); |
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222 } |
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223 |
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224 plot.setRangeAxis(idx, yAxis); |
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225 yAxis.configure(); |
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226 |
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227 if (idx % 2 != 0) |
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228 plot.setRangeAxisLocation(idx, AxisLocation.BOTTOM_OR_RIGHT); |
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229 else |
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230 plot.setRangeAxisLocation(idx, AxisLocation.BOTTOM_OR_LEFT); |
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231 |
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232 plot.mapDatasetToRangeAxis(idx, idx); |
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233 } |
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234 |
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235 |
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236 @Override |
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237 protected void prepareRangeAxis(String seriesKey, int idx) { |
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238 return; |
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239 // do nothing here |
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240 } |
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241 |
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242 |
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243 @Override |
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244 protected void storeMaxValue(Map values, Object value, String parameter) { |
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245 return; |
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246 // do nothing here |
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247 } |
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248 |
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249 |
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250 @Override |
298
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251 protected String createSeriesName( |
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252 String breakPoint1, |
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253 String breakPoint2, |
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254 String breakPoint3 |
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255 ) { |
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256 log.debug("create seriesname of horizontalprofile chart"); |
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257 return super.createSeriesName( |
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258 breakPoint1, |
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259 breakPoint2, |
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260 breakPoint3) + |
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261 " " + |
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262 findValueTitle(dates, breakPoint3); |
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263 } |
340
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264 |
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265 |
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266 @Override |
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267 protected void addGapsOnGrid( |
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268 Result[] results, |
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269 Series series, |
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270 int startPos, |
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271 int endPos |
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272 ) { |
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273 String axis = getDependendAxisName( |
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274 results[startPos], |
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275 results[startPos+1] |
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276 ); |
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277 |
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278 int last = 0; |
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279 int current = 0; |
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280 Point lastPoint = null; |
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281 Point currentPoint = null; |
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282 |
644
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283 try { |
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284 firstPoint = getPoint(results[0]); |
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285 } |
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286 catch (ParseException pe) { |
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287 log.error("Unable to parse start point for gap detection."); |
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288 return; |
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289 } |
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290 |
340
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291 for (int i = startPos+1; i < endPos; i++) { |
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292 try { |
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293 last = results[i-1].getInteger(axis); |
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294 lastPoint = getPoint(results[i-1]); |
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295 current = results[i].getInteger(axis); |
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296 currentPoint = getPoint(results[i]); |
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297 double distance = DistanceCalculator.calculateDistance( |
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298 firstPoint, |
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299 currentPoint); |
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300 double distanceOld = DistanceCalculator.calculateDistance( |
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301 firstPoint, |
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302 lastPoint); |
340
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303 |
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304 boolean detected = gridDetection(last, current); |
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305 |
643
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306 if (log.isDebugEnabled()) { |
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307 log.debug("Last point: " + lastPoint.toString()); |
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308 log.debug("Current point: " + currentPoint.toString()); |
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309 log.debug("Current distance from start: " + distance); |
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310 } |
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311 |
340
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312 if (detected) { |
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313 log.info( |
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314 "Gap detected on grid between " + distanceOld + |
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315 " and " + distance); |
340
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316 |
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317 ((XYSeries) series).add(distance-1d, null); |
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318 ((XYSeries) series).add(distanceOld+1d, null); |
340
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319 } |
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320 } |
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321 catch (ParseException pe) { |
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322 log.warn("Error while parsing point for gap detection.", pe); |
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323 } |
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324 } |
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325 } |
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326 |
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327 |
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328 /** |
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329 * Method to add gaps between two data points. The real detection is done by |
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330 * {@link #simpleDetection} and {@link #specialDetection}. |
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331 * |
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332 * @param results All data points in this dataset. |
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333 * @param series Series to be processed. |
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334 * @param startValue <code>Point</code> where the scan for gaps should begin. |
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335 * @param endValue <code>Point</code> where the scan should end. |
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336 * @param startPos Start position of this series in <code>results</code>. |
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337 * @param endPos End position of a series in <code>results</code> |
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338 */ |
340
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339 protected void addGaps( |
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340 Result[] results, |
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341 Series series, |
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342 Point startValue, |
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343 Point endValue, |
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344 int startPos, |
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345 int endPos |
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346 ) { |
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347 double range = 0; |
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348 Point last = null; |
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349 Point now = null; |
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350 |
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351 for (int i = startPos+1; i < endPos; i++) { |
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352 boolean detected = false; |
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353 |
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354 try { |
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355 last = (Point) getPoint(results[i-1]); |
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356 now = (Point) getPoint(results[i]); |
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357 |
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358 // gap detection for more than GAP_MAX_VALUES values |
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359 if (results.length > GAP_MAX_VALUES) |
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360 detected = simpleDetection(startValue, endValue, last, now); |
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361 // gap detection for less than GAP_MAX_VALUES values |
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362 else |
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363 detected = specialDetection( |
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364 startValue, |
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365 endValue, |
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366 last, |
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367 now, |
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368 results.length |
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369 ); |
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370 |
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371 // gap detected, insert null value to break line |
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372 if (detected) { |
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373 log.info("Gap after " + range); |
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374 double x = range + 0.0001; |
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375 |
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376 ((XYSeries)series).add(x, null); |
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377 } |
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378 |
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379 range += DistanceCalculator.calculateDistance(last,now); |
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380 } |
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381 catch (ParseException pe) { |
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382 log.warn("Error while parsing point."); |
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383 } |
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384 |
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385 } |
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386 } |
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387 |
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388 |
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389 /** |
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390 * Simple method to detect gaps. A gap is detected if the delta between two |
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391 * data points (current, last) is bigger than <code>PERCENTAGE</code> percent |
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392 * of delta of start and end. |
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393 * <br> |
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394 * (smallDelta > delta / 100 * PERCENTAGE) |
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395 * |
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396 * @param start First data point in a series |
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397 * @param end Last data point in a series |
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398 * @param last Left point |
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399 * @param current Right point |
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400 * |
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401 * @return true, if a gap is detected between last and current - otherwise |
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402 * false. |
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403 */ |
340
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404 protected boolean simpleDetection( |
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405 Point start, |
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406 Point end, |
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407 Point last, |
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408 Point current |
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409 ) { |
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410 double delta = DistanceCalculator.calculateDistance(start, end); |
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411 double deltaSmall = DistanceCalculator.calculateDistance(last,current); |
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412 |
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413 return (deltaSmall > (delta / 100 * PERCENTAGE)); |
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414 } |
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415 |
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416 |
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417 /** |
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418 * Method to detect gaps between two data points. Following formula is used |
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419 * for detection:<br> |
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420 * smallDelta > (3.0 / (count - 1) * delta)<br> |
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421 * smallDelta = distance between <code>current</code> and <code>last</code> |
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422 * <br> |
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423 * delta = distance between <code>start</code> and <code>end</code> |
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424 * |
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425 * @param start First data point in a series |
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426 * @param end Last data point in a series |
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427 * @param last Left point |
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428 * @param current Right point |
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429 * @param count Number of datapoints |
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430 * @return true, if a gap is detected between last and current - otherwise |
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431 * false. |
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432 */ |
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433 protected boolean specialDetection( |
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434 Point start, |
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435 Point end, |
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436 Point last, |
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437 Point current, |
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438 int count |
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439 ) { |
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440 double delta = Math.abs( |
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441 DistanceCalculator.calculateDistance(end, start) |
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442 ); |
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443 double smallDelta = Math.abs( |
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444 DistanceCalculator.calculateDistance(current, last) |
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445 ); |
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446 |
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447 return (smallDelta > (3.0 / (count - 1) * delta)); |
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448 } |
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449 |
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450 |
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451 @Override |
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452 protected String getDependendAxisName(Result first, Result second) { |
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453 if (first.getInteger("IPOSITION") == second.getInteger("IPOSITION")) |
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454 return "JPOSITION"; |
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455 |
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456 return "IPOSITION"; |
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457 } |
340
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458 |
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459 /** |
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460 * This method returns a point from a given wkt string stored in |
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461 * <code>result</code>. |
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462 * |
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463 * @param result <code>Result</code> object which contains the wkt string. |
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464 * The wkt string needs to be available under the key SHAPE. |
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465 * |
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466 * @return Point representation of wkt string. |
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467 */ |
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468 private Point getPoint(Result result) |
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469 throws ParseException |
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470 { |
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471 return (Point) wktReader.read(result.getString("SHAPE")); |
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472 } |
298
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473 } |
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474 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |