Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/chart/HorizontalProfileChart.java @ 848:47280aff0eb7
Added an y-axis label in histograms (issue243).
gnv-artifacts/trunk@964 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Wed, 21 Apr 2010 09:43:46 +0000 |
parents | 8b6ef091d38c |
children | 38c8cc586a85 |
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; |
298
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180 } |
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181 |
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182 |
656
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183 @Override |
846
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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); |
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197 yAxis.setRange(Range.expand(yRange, LOWER_MARGIN, UPPER_MARGIN)); |
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198 log.debug("Max Range of dataset is: " + yRange.toString()); |
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199 |
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200 if (seriesKey.contains("richtung")) { |
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201 yAxis.setTickUnit(new NumberTickUnit(30.0)); |
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202 yAxis.setUpperBound(360.0); |
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203 yAxis.setLowerBound(0.0); |
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204 } |
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205 else { |
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206 yAxis.setFixedDimension(10.0); |
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207 yAxis.setAutoRangeIncludesZero(false); |
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208 } |
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209 |
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210 plot.setRangeAxis(idx, yAxis); |
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211 yAxis.configure(); |
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212 |
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213 if (idx % 2 != 0) |
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214 plot.setRangeAxisLocation(idx, AxisLocation.BOTTOM_OR_RIGHT); |
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215 else |
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216 plot.setRangeAxisLocation(idx, AxisLocation.BOTTOM_OR_LEFT); |
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217 |
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218 plot.mapDatasetToRangeAxis(idx, idx); |
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219 } |
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220 |
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221 |
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222 @Override |
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223 protected void prepareRangeAxis(String seriesKey, int idx) { |
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224 return; |
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225 // do nothing here |
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226 } |
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227 |
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228 |
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229 @Override |
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230 protected void storeMaxValue(Map values, Object value, String parameter) { |
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231 return; |
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232 // do nothing here |
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233 } |
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234 |
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235 |
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236 @Override |
298
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237 protected String createSeriesName( |
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238 String breakPoint1, |
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239 String breakPoint2, |
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240 String breakPoint3 |
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241 ) { |
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242 log.debug("create seriesname of horizontalprofile chart"); |
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243 return super.createSeriesName( |
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244 breakPoint1, |
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245 breakPoint2, |
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246 breakPoint3) + |
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247 " " + |
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248 findValueTitle(dates, breakPoint3); |
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249 } |
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250 |
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251 |
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252 @Override |
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253 protected void addGapsOnGrid( |
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254 Result[] results, |
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255 Series series, |
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256 int startPos, |
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257 int endPos |
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258 ) { |
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259 String axis = getDependendAxisName( |
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260 results[startPos], |
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261 results[startPos+1] |
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262 ); |
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263 |
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264 int last = 0; |
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265 int current = 0; |
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266 Point lastPoint = null; |
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267 Point currentPoint = null; |
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268 |
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269 try { |
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270 firstPoint = getPoint(results[0]); |
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271 } |
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272 catch (ParseException pe) { |
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273 log.error("Unable to parse start point for gap detection."); |
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274 return; |
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275 } |
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276 |
340
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277 for (int i = startPos+1; i < endPos; i++) { |
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278 try { |
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279 last = results[i-1].getInteger(axis); |
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280 lastPoint = getPoint(results[i-1]); |
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281 current = results[i].getInteger(axis); |
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282 currentPoint = getPoint(results[i]); |
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283 double distance = DistanceCalculator.calculateDistance( |
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284 firstPoint, |
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285 currentPoint); |
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286 double distanceOld = DistanceCalculator.calculateDistance( |
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287 firstPoint, |
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288 lastPoint); |
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289 |
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290 boolean detected = gridDetection(last, current); |
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291 |
643
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292 if (log.isDebugEnabled()) { |
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293 log.debug("Last point: " + lastPoint.toString()); |
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294 log.debug("Current point: " + currentPoint.toString()); |
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295 log.debug("Current distance from start: " + distance); |
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296 } |
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297 |
340
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298 if (detected) { |
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299 log.info( |
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300 "Gap detected on grid between " + distanceOld + |
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301 " and " + distance); |
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302 |
644
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303 ((XYSeries) series).add(distance-1d, null); |
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304 ((XYSeries) series).add(distanceOld+1d, null); |
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305 } |
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306 } |
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307 catch (ParseException pe) { |
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308 log.warn("Error while parsing point for gap detection.", pe); |
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309 } |
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310 } |
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311 } |
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312 |
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313 |
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314 /** |
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315 * Method to add gaps between two data points. The real detection is done by |
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316 * {@link #simpleDetection} and {@link #specialDetection}. |
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317 * |
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318 * @param results All data points in this dataset. |
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319 * @param series Series to be processed. |
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320 * @param startValue <code>Point</code> where the scan for gaps should begin. |
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321 * @param endValue <code>Point</code> where the scan should end. |
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322 * @param startPos Start position of this series in <code>results</code>. |
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323 * @param endPos End position of a series in <code>results</code> |
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324 */ |
340
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325 protected void addGaps( |
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326 Result[] results, |
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327 Series series, |
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328 Point startValue, |
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329 Point endValue, |
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330 int startPos, |
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331 int endPos |
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332 ) { |
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333 double range = 0; |
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334 Point last = null; |
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335 Point now = null; |
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336 |
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337 for (int i = startPos+1; i < endPos; i++) { |
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338 boolean detected = false; |
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339 |
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340 try { |
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341 last = (Point) getPoint(results[i-1]); |
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342 now = (Point) getPoint(results[i]); |
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343 |
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344 // gap detection for more than GAP_MAX_VALUES values |
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345 if (results.length > GAP_MAX_VALUES) |
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346 detected = simpleDetection(startValue, endValue, last, now); |
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347 // gap detection for less than GAP_MAX_VALUES values |
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348 else |
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349 detected = specialDetection( |
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350 startValue, |
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351 endValue, |
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352 last, |
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353 now, |
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354 results.length |
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355 ); |
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356 |
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357 // gap detected, insert null value to break line |
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358 if (detected) { |
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359 log.info("Gap after " + range); |
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360 double x = range + 0.0001; |
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361 |
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362 ((XYSeries)series).add(x, null); |
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363 } |
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364 |
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365 range += DistanceCalculator.calculateDistance(last,now); |
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366 } |
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367 catch (ParseException pe) { |
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368 log.warn("Error while parsing point."); |
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369 } |
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370 |
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371 } |
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372 } |
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373 |
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374 |
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375 /** |
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376 * Simple method to detect gaps. A gap is detected if the delta between two |
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377 * data points (current, last) is bigger than <code>PERCENTAGE</code> percent |
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378 * of delta of start and end. |
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379 * <br> |
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380 * (smallDelta > delta / 100 * PERCENTAGE) |
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381 * |
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382 * @param start First data point in a series |
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383 * @param end Last data point in a series |
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384 * @param last Left point |
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385 * @param current Right point |
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386 * |
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387 * @return true, if a gap is detected between last and current - otherwise |
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388 * false. |
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389 */ |
340
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390 protected boolean simpleDetection( |
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391 Point start, |
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392 Point end, |
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393 Point last, |
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394 Point current |
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395 ) { |
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396 double delta = DistanceCalculator.calculateDistance(start, end); |
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397 double deltaSmall = DistanceCalculator.calculateDistance(last,current); |
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398 |
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399 return (deltaSmall > (delta / 100 * PERCENTAGE)); |
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400 } |
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401 |
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402 |
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403 /** |
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404 * Method to detect gaps between two data points. Following formula is used |
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405 * for detection:<br> |
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406 * smallDelta > (3.0 / (count - 1) * delta)<br> |
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407 * smallDelta = distance between <code>current</code> and <code>last</code> |
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408 * <br> |
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409 * delta = distance between <code>start</code> and <code>end</code> |
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410 * |
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411 * @param start First data point in a series |
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412 * @param end Last data point in a series |
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413 * @param last Left point |
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414 * @param current Right point |
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415 * @param count Number of datapoints |
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416 * @return true, if a gap is detected between last and current - otherwise |
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417 * false. |
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418 */ |
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419 protected boolean specialDetection( |
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420 Point start, |
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421 Point end, |
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422 Point last, |
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423 Point current, |
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424 int count |
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425 ) { |
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426 double delta = Math.abs( |
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427 DistanceCalculator.calculateDistance(end, start) |
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428 ); |
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429 double smallDelta = Math.abs( |
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430 DistanceCalculator.calculateDistance(current, last) |
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431 ); |
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432 |
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433 return (smallDelta > (3.0 / (count - 1) * delta)); |
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434 } |
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435 |
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436 |
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437 @Override |
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438 protected String getDependendAxisName(Result first, Result second) { |
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439 if (first.getInteger("IPOSITION") == second.getInteger("IPOSITION")) |
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440 return "JPOSITION"; |
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441 |
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442 return "IPOSITION"; |
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443 } |
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444 |
767
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445 /** |
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446 * This method returns a point from a given wkt string stored in |
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447 * <code>result</code>. |
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448 * |
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449 * @param result <code>Result</code> object which contains the wkt string. |
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450 * The wkt string needs to be available under the key SHAPE. |
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451 * |
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452 * @return Point representation of wkt string. |
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453 */ |
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454 private Point getPoint(Result result) |
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455 throws ParseException |
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456 { |
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457 return (Point) wktReader.read(result.getString("SHAPE")); |
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458 } |
298
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459 } |
327
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460 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |