Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/chart/VerticalProfileChart.java @ 812:41a7c49b5cb4
ISSUE 215 msg1170: Integrated additional Column into the ODV-Export to identify TimeSeries
gnv-artifacts/trunk@896 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Tim Englich <tim.englich@intevation.de> |
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date | Fri, 09 Apr 2010 13:00:38 +0000 |
parents | feae2f9d6c6f |
children | 22c18083225e |
rev | line source |
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1 package de.intevation.gnv.chart; |
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2 |
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3 import de.intevation.gnv.geobackend.base.Result; |
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4 |
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5 import de.intevation.gnv.state.describedata.KeyValueDescibeData; |
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6 |
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7 import java.util.Collection; |
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8 import java.util.HashMap; |
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9 import java.util.Iterator; |
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10 import java.util.Locale; |
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11 import java.util.Map; |
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12 |
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13 import org.apache.log4j.Logger; |
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14 |
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15 import org.jfree.chart.ChartTheme; |
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16 |
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17 import org.jfree.chart.axis.Axis; |
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18 import org.jfree.chart.axis.NumberAxis; |
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19 |
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20 import org.jfree.chart.plot.PlotOrientation; |
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21 import org.jfree.chart.plot.XYPlot; |
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22 |
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23 import org.jfree.data.Range; |
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24 |
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25 import org.jfree.data.general.Series; |
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26 |
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27 import org.jfree.data.xy.XYSeries; |
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28 import org.jfree.data.xy.XYSeriesCollection; |
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29 |
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30 /** |
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31 * This class is used to create xy charts of vertical profiles. |
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32 * |
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33 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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34 */ |
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35 public class VerticalProfileChart |
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36 extends AbstractXYLineChart |
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37 { |
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38 /** |
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39 * Default axis identifier which is used if @see #getDependendAxisName does |
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40 * not return a value. The value of this field is {@value}. |
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41 */ |
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42 public static final String DEFAULT_AXIS = "KPOSITION"; |
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43 |
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44 /** |
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45 * Logger used for logging with log4j. |
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46 */ |
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47 private static Logger log = Logger.getLogger(VerticalProfileChart.class); |
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48 |
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49 /** |
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50 * Constant used for gap detection. Its value is {@value}. |
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51 */ |
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52 protected final double PERCENTAGE = 5.0; |
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53 |
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54 /** |
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55 * Constnat used for gap detection in @see #gridDetection. Its value is |
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56 * {@value}. |
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57 */ |
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58 protected final double GAP_MAX_LEVEL = Math.sqrt(2.0); |
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59 |
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60 /** |
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61 * Constant used for gap detection in @see #addGaps. Its value is {@value}. |
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62 */ |
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63 protected final int GAP_MAX_VALUES = 60; |
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64 |
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65 /** |
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66 * Map to store max ranges of each parameter |
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67 * (org.jfree.chart.axis.Axis.setAutoRange(true) doesn't seem to work |
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68 * properly. |
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69 */ |
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70 protected Map values; |
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71 |
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72 |
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73 /** |
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74 * Constructor used to create xy-charts. |
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75 * |
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76 * @param labels Labels used to be displayed in title, subtitle and so on. |
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77 * @param theme ChartTheme used to adjust the rendering of this chart. |
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78 * @param parameters Collection containing a bunch of parameters. |
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79 * @param measurements Collection containing a bunch of measurements. |
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80 * @param dates Collection containing a bunch of date objects. |
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81 * @param result Collection containing a bunch of <code>Result</code> |
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82 * objects which contain the actual data items to be displayed. |
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83 * @param timeGaps Collection with timegap definitions. |
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84 * @param locale Locale used to specify the format of labels, numbers, ... |
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85 * @param linesVisible Render lines between data points if true, otherwise |
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86 * not. |
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87 * @param shapesVisible Render vertices as points if true, otherwise not. |
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88 */ |
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89 public VerticalProfileChart( |
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90 ChartLabels labels, |
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91 ChartTheme theme, |
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92 Collection parameters, |
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93 Collection measurements, |
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94 Collection dates, |
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95 Collection result, |
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96 Collection timeGaps, |
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97 Locale locale, |
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98 boolean linesVisible, |
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99 boolean shapesVisible |
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100 ) { |
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101 this.labels = labels; |
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102 this.theme = theme; |
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103 this.parameters = parameters; |
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104 this.measurements = measurements; |
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105 this.dates = dates; |
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106 this.resultSet = result; |
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107 this.timeGaps = timeGaps; |
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108 this.locale = locale; |
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109 this.PLOT_ORIENTATION = PlotOrientation.HORIZONTAL; |
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110 this.linesVisible = linesVisible; |
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111 this.shapesVisible = shapesVisible; |
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112 this.datasets = new HashMap(); |
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113 this.ranges = new HashMap(); |
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114 this.values = new HashMap(); |
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115 } |
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116 |
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117 |
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118 /** |
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119 * @see de.intevation.gnv.chart.AbstractXYLineChart#initData() |
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120 */ |
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121 @Override |
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122 protected void initData() { |
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123 log.debug("init data for VerticalProfileChart"); |
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124 |
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125 String breakPoint1 = null; |
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126 String breakPoint2 = null; |
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127 String breakPoint3 = null; |
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128 |
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129 Iterator iter = resultSet.iterator(); |
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130 Result row = null; |
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131 String seriesName = null; |
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132 String parameter = null; |
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133 XYSeries series = null; |
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134 |
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135 int idx = 0; |
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136 int startPos = 0; |
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137 int endPos = 0; |
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138 double startValue = 0; |
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139 double endValue = 0; |
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140 |
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141 Result[] results = |
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142 (Result[]) resultSet.toArray(new Result[resultSet.size()]); |
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143 |
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144 while (iter.hasNext()) { |
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145 row = (Result) iter.next(); |
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146 |
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147 // add current data to plot and prepare for next one |
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148 if (!row.getString("GROUP1").equals(breakPoint1) || |
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149 !row.getString("GROUP2").equals(breakPoint2) || |
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150 !row.getString("GROUP3").equals(breakPoint3) |
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151 ) { |
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152 log.debug("prepare data/plot for next dataset"); |
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153 |
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154 if(series != null) { |
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155 gapDetection(results, series, startPos, endPos); |
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156 addSeries(series, parameter, idx); |
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157 |
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158 startPos = endPos +1; |
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159 } |
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160 |
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161 // prepare variables for next plot |
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162 breakPoint1 = row.getString("GROUP1"); |
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163 breakPoint2 = row.getString("GROUP2"); |
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164 breakPoint3 = row.getString("GROUP3"); |
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165 |
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166 seriesName = createSeriesName( |
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167 breakPoint1, |
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168 breakPoint2, |
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169 breakPoint3 |
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170 ); |
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171 parameter = findParameter(seriesName); |
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172 |
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173 log.debug("next dataset is '" + seriesName + "'"); |
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174 series = new XYSeries(seriesName); |
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175 } |
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176 |
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177 addValue(row, series); |
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178 Object x = getValue(row); |
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179 Double y = row.getDouble("YORDINATE"); |
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180 if (x != null && y != null) { |
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181 storeMaxRange(ranges, y, parameter); |
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182 storeMaxValue(values, x, parameter); |
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183 } |
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184 endPos++; |
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185 } |
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186 |
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187 if (results.length == 0) |
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188 return; |
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189 |
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190 gapDetection(results, series, startPos, endPos); |
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191 addSeries(series, parameter, idx); |
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192 |
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193 addDatasets(); |
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194 } |
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195 |
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196 |
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197 /** |
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198 * Extract the important value from <code>Result</code> object. |
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199 * |
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200 * @param row <code>Result</code> object which contains a required value. |
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201 * |
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202 * @return X-ordinate |
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203 */ |
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204 protected Object getValue(Result row) { |
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205 return row.getDouble("XORDINATE"); |
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206 } |
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207 |
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208 |
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209 /** |
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210 * General method to start a gap detection. The switch between standard gap |
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211 * detection method <code>addGaps</code> and a specialized method |
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212 * <code>addGapsOnGrid</code> is done by a parameter <code>DATEID</code> |
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213 * which is stored a each <code>Result</code> object. Specialized method is |
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214 * used if <code>DATEID</code> equals 2, otherwise the standard method is |
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215 * used. |
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216 * |
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217 * @param results Array of <code>Result</code> objects storing data of |
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218 * this chart. |
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219 * @param series Series used to add gaps. |
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220 * @param startPos Index of first element of series in results. |
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221 * @param endPos Index of last element of series in results. |
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222 */ |
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223 protected void gapDetection( |
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224 Result[] results, |
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225 Series series, |
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226 int startPos, |
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227 int endPos |
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228 ) { |
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229 double startValue = results[startPos].getDouble("XORDINATE"); |
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230 double endValue = results[endPos-1].getDouble("XORDINATE"); |
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231 if (results[0].getInteger("DATAID") == 2) |
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232 addGapsOnGrid(results, series, startPos, endPos); |
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233 else |
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234 addGaps(results, series, startValue, endValue, startPos, endPos); |
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235 } |
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236 |
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237 |
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238 /** |
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239 * Method to expand max range of a range axis identified by seriesKey. |
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240 * <code>LOWER_MARGIN</code> and <code>UPPER_MARGIN</code> are used to |
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241 * expand the range. |
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242 * |
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243 * @param seriesKey Key to identify the series stored at the current |
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244 * Dataset. |
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245 * @param idx Currently not used. |
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246 */ |
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247 protected void prepareRangeAxis(String seriesKey, int idx) { |
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248 XYPlot plot = chart.getXYPlot(); |
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249 NumberAxis xAxis = (NumberAxis) plot.getDomainAxis(); |
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250 |
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251 Range xRange = (Range) values.get(seriesKey); |
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252 xAxis.setRange(Range.expand(xRange, LOWER_MARGIN, UPPER_MARGIN)); |
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253 log.debug("Max X-Range of dataset is: " + xRange.toString()); |
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254 } |
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255 |
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256 |
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257 /** |
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258 * @see de.intevation.gnv.chart.AbstractXYLineChart#addValue(Result, Series) |
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259 */ |
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260 @Override |
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261 protected void addValue(Result row, Series series) { |
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262 ((XYSeries) series).add( |
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263 row.getDouble("XORDINATE"), |
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264 row.getDouble("YORDINATE") |
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265 ); |
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266 } |
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267 |
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268 |
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269 /** |
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270 * @param parameter |
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271 * @see de.intevation.gnv.chart.AbstractXYLineChart#addSeries(Series, String, |
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272 * int) |
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273 */ |
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274 @Override |
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275 protected void addSeries(Series series, String parameter, int idx) { |
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276 log.debug("add series (" + parameter + ")to chart"); |
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277 |
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278 if (series == null) { |
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279 log.warn("no data to add"); |
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280 return; |
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281 } |
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282 |
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283 XYSeriesCollection xysc = null; |
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284 |
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285 if (datasets.containsKey(parameter)) |
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286 xysc = (XYSeriesCollection) datasets.get(parameter); |
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287 else |
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288 xysc = new XYSeriesCollection(); |
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289 |
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290 xysc.addSeries((XYSeries) series); |
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291 datasets.put(parameter, xysc); |
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292 } |
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293 |
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294 |
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295 /** |
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296 * Method to add processed datasets to plot. Each dataset is adjusted using |
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297 * <code>prepareAxis</code> and <code>adjustRenderer</code> methods. |
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298 */ |
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299 protected void addDatasets() { |
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300 Iterator iter = parameters.iterator(); |
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301 XYPlot plot = chart.getXYPlot(); |
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302 int idx = 0; |
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303 |
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304 XYSeriesCollection xysc = null; |
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305 KeyValueDescibeData data = null; |
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306 String key = null; |
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307 while (iter.hasNext()) { |
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308 data = (KeyValueDescibeData) iter.next(); |
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309 key = data.getValue(); |
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310 |
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311 if (datasets.containsKey(key)) { |
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312 xysc = (XYSeriesCollection)datasets.get(key); |
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313 plot.setDataset(idx, xysc ); |
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314 log.debug("Added " + key + " parameter to plot."); |
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315 prepareAxis(key, idx); |
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316 prepareRangeAxis(key, idx); |
334
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317 adjustRenderer( |
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318 idx++, |
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319 xysc.getSeriesCount(), |
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320 linesVisible, |
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321 shapesVisible |
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322 ); |
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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 used to store the max y-range of each parameter in this chart. |
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330 * |
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331 * @param values Map to store max values for each parameter. |
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332 * @param val Value used to be a Double. |
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333 * @param parameter Title used to identify a range object stored in values. |
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334 */ |
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335 protected void storeMaxValue(Map values, Object val, String parameter) { |
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336 double value = ((Double) val).doubleValue(); |
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337 Range range = null; |
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338 |
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339 range = values.containsKey(parameter) |
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340 ? (Range) values.get(parameter) |
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341 : new Range(value, value); |
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342 |
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343 double lower = range.getLowerBound(); |
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344 double upper = range.getUpperBound(); |
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345 |
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346 lower = value < lower ? value : lower; |
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347 upper = value > upper ? value : upper; |
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348 |
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349 values.put(parameter, new Range(lower, upper)); |
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350 } |
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351 |
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352 |
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353 /** |
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354 * @param locale |
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355 * @see de.intevation.gnv.chart.AbstractXYLineChart#localizeDomainAxis(Axis, |
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356 * Locale) |
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357 */ |
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358 @Override |
315
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359 protected void localizeDomainAxis(Axis axis, Locale locale) { |
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360 // call localizeRangeAxis from superclass which formats NumberAxis |
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361 super.localizeRangeAxis(axis, locale); |
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362 } |
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363 |
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364 |
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365 /** |
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366 * @see de.intevation.gnv.chart.AbstractXYLineChart#createSeriesName(String, |
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367 * String, String) |
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368 */ |
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369 @Override |
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370 protected String createSeriesName( |
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371 String breakPoint1, |
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372 String breakPoint2, |
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373 String breakPoint3 |
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374 ) { |
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375 log.debug("create seriesname of verticalprofile chart"); |
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376 return findValueTitle(parameters, breakPoint1) + |
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377 " " + |
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378 findValueTitle(measurements, breakPoint2) + |
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379 "m"; |
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380 } |
340
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381 |
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382 |
767
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383 /** |
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384 * Method used to add gaps between data points on grids. The real detection |
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385 * is done in <code>gridDetection</code>. |
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386 * |
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387 * @param results Array of <code>Result</code> objects storing the relevant |
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388 * values. |
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389 * @param series Series object where the gaps are added to. |
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390 * @param startPos Index of first element which should be used in gap |
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391 * detection. Other series are stored in results as well. |
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392 * @param endPos Index of last element which should be used in gap |
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393 * detection. |
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394 */ |
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395 protected void addGapsOnGrid( |
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396 Result[] results, |
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397 Series series, |
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398 int startPos, |
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399 int endPos |
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400 ) { |
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401 String axis = null; |
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402 |
530
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403 if (results.length > (startPos+1)) { |
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404 axis = getDependendAxisName( |
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405 results[startPos], |
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406 results[startPos+1] |
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407 ); |
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408 } |
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409 else { |
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410 axis = DEFAULT_AXIS; |
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411 } |
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412 |
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413 double range = 0; |
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414 int last = 0; |
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415 int current = 0; |
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416 |
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417 for (int i = startPos+1; i < endPos; i++) { |
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418 last = results[i-1].getInteger(axis); |
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419 current = results[i].getInteger(axis); |
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420 |
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421 boolean detected = gridDetection(last, current); |
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422 |
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423 if (detected) { |
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424 double xOld = results[i-1].getDouble("XORDINATE"); |
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425 double xNow = results[i].getDouble("XORDINATE"); |
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426 log.debug("Gap detected on grid between "+ xOld +" and "+ xNow); |
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427 ((XYSeries) series).add(xOld+0.0001, null); |
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428 } |
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429 } |
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430 } |
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431 |
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432 |
767
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433 /** |
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434 * Standarad method to add gaps. There are two different methods to detect |
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435 * gaps. <code>simpleDetection</code> is used if the number of data points |
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436 * in this chart is lower than <code>GAP_MAX_VALUES</code>. Otherwise |
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437 * <code>specialDetection</code> is used. A data point with |
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438 * <code>null</code> value is added where a gap should be. This lets |
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439 * JFreeChart break the current graph. |
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440 * |
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441 * @param results Array of <code>Result</code> objects storing the relevant |
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442 * values. |
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443 * @param series Series object where the gaps are added to. |
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444 * @param startValue First data point value in series. |
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445 * @param endValue Last data point value in series. |
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446 * @param startPos Index of first data point in results which contains all |
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447 * data points of all series. |
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448 * @param endPos Index of last data point in results which contains all data |
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449 * points of all series. |
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450 */ |
340
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451 protected void addGaps( |
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452 Result[] results, |
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453 Series series, |
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454 double startValue, |
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455 double endValue, |
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456 int startPos, |
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457 int endPos |
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458 ) { |
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459 |
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460 double last = 0; |
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461 double current = 0; |
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462 int num = results.length; |
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463 |
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464 for (int i = startPos+1; i < endPos; i++) { |
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465 boolean detected = false; |
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466 |
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467 last = results[i-1].getDouble("YORDINATE"); |
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468 current = results[i].getDouble("YORDINATE"); |
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469 |
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470 // gap detection for more than GAP_MAX_VALUES values |
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471 if (num > GAP_MAX_VALUES) |
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472 detected = simpleDetection(startValue, endValue, last, current); |
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473 // gap detection for less than GAP_MAX_VALUES values |
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474 else |
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475 detected = specialDetection( |
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476 startValue, |
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477 endValue, |
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478 last, |
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479 current, |
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480 num |
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481 ); |
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482 |
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483 if (detected) { |
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484 log.info("Gap between " + last + " and " + current); |
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485 ((XYSeries) series).add((last+current)/2, null); |
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486 } |
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487 } |
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488 } |
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489 |
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490 |
767
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491 /** |
778
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492 * Simple method to detect gaps. A gap is detected if the delta between two |
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493 * data points (current, last) is bigger than <code>PERCENTAGE</code> percent |
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494 * of delta of start and end. |
767
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495 * <br> |
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496 * (smallDelta > delta / 100 * PERCENTAGE) |
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497 * |
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498 * @param start First data point value in a series. |
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499 * @param end Last data point value in a series. |
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500 * @param last Left value |
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501 * @param current Right value |
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502 * |
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503 * @return true, if a gap is detected between last and current - otherwise |
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504 * false. |
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505 */ |
340
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506 protected boolean simpleDetection( |
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507 double start, |
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508 double end, |
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509 double last, |
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510 double current |
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511 ) { |
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512 double delta = Math.abs(end - start); |
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513 double smallDelta = Math.abs(current - last); |
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514 |
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515 return (smallDelta > delta / 100 * PERCENTAGE); |
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516 } |
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517 |
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518 |
767
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519 /** |
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520 * Method to detect gaps between two data points. Following formula is used |
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521 * for detection:<br> |
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522 * smallDelta > (3.0 / (count - 1) * delta)<br> |
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523 * smallDelta = current - last<br> |
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524 * delta = end - start |
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525 * |
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526 * @param start First data point value in a series. |
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527 * @param end Last data point value in a series. |
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528 * @param last Left value |
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529 * @param current Right value |
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530 * |
788
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531 * @param count |
767
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532 * @return true, if a gap is detected between last and current - otherwise |
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533 * false. |
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534 */ |
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535 protected boolean specialDetection( |
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536 double start, |
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537 double end, |
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538 double last, |
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539 double current, |
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540 int count |
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541 ) { |
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542 double delta = Math.abs(end - start); |
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543 double smallDelta = Math.abs(current - last); |
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544 |
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545 return (smallDelta > (3.0 / (count - 1) * delta)); |
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546 } |
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547 |
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548 |
767
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549 /** |
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550 * Method used to detect gaps between two data points grids. If the delta |
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551 * between current and last is bigger than <code>GAP_MAX_LEVEL</code>, a gap |
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552 * is detected. |
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553 * |
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554 * @param last Left value |
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555 * @param current Right value |
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556 * |
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557 * @return True, if a gap was detected - otherwise false. |
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558 */ |
340
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559 protected boolean gridDetection(double last, double current) { |
643
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560 if (log.isDebugEnabled()) { |
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561 log.debug("######################################################"); |
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562 log.debug("Parameters for gap detection"); |
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563 log.debug("Defined gap size for grids: " + GAP_MAX_LEVEL); |
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564 log.debug("1st value to compare: " + last); |
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565 log.debug("2nd value to compare: " + current); |
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566 log.debug("Difference: " + Math.abs(current - last)); |
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567 } |
340
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568 return (Math.abs(current - last) > GAP_MAX_LEVEL); |
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569 } |
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570 |
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571 |
767
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572 /** |
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573 * This method returns the key which is used to retrieve the y-value served |
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574 * by a <code>Result</code> object. |
767
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575 * |
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576 * @param first <code>Result</code> object - not used in this class. |
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577 * @param second <code>Result</code> object - not used in this class. |
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578 * |
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579 * @return the string "KPOSITION" |
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580 */ |
340
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581 protected String getDependendAxisName(Result first, Result second) { |
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582 return "KPOSITION"; |
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583 } |
298
80f7c5dc09c6
Implementation of classes for creating timeseries, verticalprofile and horizontalprofile charts.
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584 } |
315
63f8b3fb7d9a
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585 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |