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annotate geotemco/js/FuzzyTimeline/FuzzyTimelineRangeBars.js @ 7:0e9a7c69f22c

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author Zoe Hong <zhong@mpiwg-berlin.mpg.de>
date Fri, 06 Feb 2015 09:44:17 +0100
parents b12c99b7c3f0
children
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1 /*
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2 * FuzzyTimelineRangeBars.js
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3 *
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4 * Copyright (c) 2013, Sebastian Kruse. All rights reserved.
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5 *
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6 * This library is free software; you can redistribute it and/or
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7 * modify it under the terms of the GNU Lesser General Public
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8 * License as published by the Free Software Foundation; either
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9 * version 3 of the License, or (at your option) any later version.
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10 *
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11 * This library is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 * Lesser General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU Lesser General Public
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17 * License along with this library; if not, write to the Free Software
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18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 * MA 02110-1301 USA
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20 */
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21
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22 /**
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23 * @class FuzzyTimelineRangeBars
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24 * Implementation for a fuzzy time-ranges barchart
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25 * @author Sebastian Kruse (skruse@mpiwg-berlin.mpg.de)
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26 *
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27 * @param {HTML object} parent div to append the FuzzyTimeline
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28 */
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29 function FuzzyTimelineRangeBars(parent) {
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30
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31 this.rangeBars = this;
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32
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33 this.parent = parent;
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34 this.options = parent.options;
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35
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36 this.datasets;
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37 //contains selected data
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38 this.selected = undefined;
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39
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40 this.datasetsPlot;
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41 this.highlightedDatasetsPlot;
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42 this.yValMin;
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43 this.yValMax;
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44 this.displayType;
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45
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46 this.plotDiv = this.parent.gui.plotDiv;
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47
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48 this.spanWidth;
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49 this.tickSpans;
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50 this.plot;
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51 }
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52
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53 FuzzyTimelineRangeBars.prototype = {
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54
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55 initialize : function(datasets) {
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56 var rangeBar = this;
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57
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58 rangeBar.datasets = datasets;
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59 rangeBar.selected = [];
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60 },
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61
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62 createPlot : function(datasets) {
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63 var rangeBar = this;
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64 var plots = [];
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65 var objectHashes = [];
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66
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67 //-1 because last span is always empty (only there to have the ending date)
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68 var tickCount = rangeBar.tickSpans.length-1;
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69
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70 $(datasets).each(function(){
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71 var chartDataCounter = [];
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72 var objectHash = new Object();
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73
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74 for (var i = 0; i < tickCount; i++){
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75 chartDataCounter[i]=0;
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76 }
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77 //check if we got "real" datasets, or just array of objects
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78 var datasetObjects = this;
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79 if (typeof this.objects !== "undefined")
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80 datasetObjects = this.objects;
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81 $(datasetObjects).each(function(){
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82 var ticks = rangeBar.parent.getTicks(this, rangeBar.spanWidth);
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83 if (typeof ticks !== "undefined"){
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84 var exactTickCount =
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85 ticks.firstTickPercentage+
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86 ticks.lastTickPercentage+
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87 (ticks.lastTick-ticks.firstTick-1);
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88 for (var i = ticks.firstTick; i <= ticks.lastTick; i++){
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89 var weight = 0;
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90 //calculate the weight for each span, that the object overlaps
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91 if (rangeBar.parent.options.timelineMode == 'fuzzy'){
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92 //in fuzzy mode, each span gets just a fraction of the complete weight
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93 if (i == ticks.firstTick)
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94 weight = this.weight * ticks.firstTickPercentage/exactTickCount;
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95 else if (i == ticks.lastTick)
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96 weight = this.weight * ticks.lastTickPercentage/exactTickCount;
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97 else
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98 weight = this.weight * 1/exactTickCount;
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99 } else if (rangeBar.parent.options.timelineMode == 'stacking'){
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100 //in stacking mode each span gets the same amount.
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101 //(besides first and last..)
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102 if (i == ticks.firstTick)
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103 weight = this.weight * ticks.firstTickPercentage;
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104 else if (i == ticks.lastTick)
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105 weight = this.weight * ticks.lastTickPercentage;
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106 else
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107 weight = this.weight;
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108
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109 weight = this.weight;
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110 }
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111
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112 chartDataCounter[i] += weight;
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113 //add this object to the hash
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114 if (typeof objectHash[i] === "undefined")
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115 objectHash[i] = [];
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116 objectHash[i].push(this);
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117 }
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118 }
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119 });
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120
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121 //scale according to selected type
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122 chartDataCounter = rangeBar.parent.scaleData(chartDataCounter);
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123
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124 //transform data so it can be passed to the flot barchart
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125 var plotData = [];
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126 for (var i = 0; i < tickCount; i++){
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127 plotData[i] = [];
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128 plotData[i][0] = i;
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129 plotData[i][1] = chartDataCounter[i];
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130 }
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131
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132 //delete bars with 0 values
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133 for (var i = 0; i < tickCount; i++){
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134 if (plotData[i][1]==0)
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135 delete plotData[i];
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136 }
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137
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138 plots.push(plotData);
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139 objectHashes.push(objectHash);
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140 });
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141
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142 return {plots:plots, hashs:objectHashes};
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143 },
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144
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145 showPlot : function(){
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146 var rangeBar = this;
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147 var plot = rangeBar.datasetsPlot;
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148 var highlight_select_plot = $.merge([],plot);
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149
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150 //see if there are selected/highlighted values
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151 if (rangeBar.highlightedDatasetsPlot instanceof Array){
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152 //check if plot is some other - external - graph
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153 if (plot === rangeBar.datasetsPlot)
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154 highlight_select_plot = $.merge(highlight_select_plot,rangeBar.highlightedDatasetsPlot);
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155 }
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156
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157 var tickCount = rangeBar.tickSpans.length-1;
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158 var ticks = [];
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159
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160 var axisFormatString = "YYYY";
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161 if (rangeBar.spanWidth<60*1000){
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162 axisFormatString = "YYYY/MM/DD HH:mm:ss";
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163 } else if (rangeBar.spanWidth<60*60*1000) {
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164 axisFormatString = "YYYY/MM/DD HH:mm";
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165 } else if (rangeBar.spanWidth<24*60*60*1000){
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166 axisFormatString = "YYYY/MM/DD HH";
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167 } else if (rangeBar.spanWidth<31*24*60*60*1000){
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168 axisFormatString = "YYYY/MM/DD";
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169 } else if (rangeBar.spanWidth<12*31*24*60*60*1000){
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170 axisFormatString = "YYYY/MM";
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171 }
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172 //only show ~10 labels on the x-Axis (increase if zoomed)
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173 var labelModulo = Math.ceil(tickCount/(10*rangeBar.parent.zoomFactor));
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174 for (var i = 0; i < tickCount; i++){
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175 var tickLabel = "";
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176 if (i%labelModulo==0){
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177 tickLabel = rangeBar.tickSpans[i].format(axisFormatString);
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178 }
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179 while ((tickLabel.length > 1) && (tickLabel.indexOf("0")==0))
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180 tickLabel = tickLabel.substring(1);
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181 ticks[i] = [i,tickLabel];
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182 }
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183
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184 var options = {
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185 series:{
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186 bars:{show: true}
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187 },
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188 grid: {
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189 hoverable: true,
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190 clickable: true,
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191 backgroundColor: rangeBar.parent.options.backgroundColor,
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192 borderWidth: 0,
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193 minBorderMargin: 0,
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194 },
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195 xaxis: {
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196 ticks: ticks,
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197 min : 0,
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198 max : tickCount,
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199 },
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200 yaxis: {
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201 min : rangeBar.yValMin,
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202 max : rangeBar.yValMax*1.05
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203 },
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204 tooltip: true,
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205 tooltipOpts: {
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206 content: function(label, xval, yval, flotItem){
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207 var fromLabel = rangeBar.tickSpans[xval].format(axisFormatString);
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208 while ((fromLabel.length > 1) && (fromLabel.indexOf("0")==0))
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209 fromLabel = fromLabel.substring(1);
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210 var toLabel = rangeBar.tickSpans[xval+1].clone().subtract("ms",1).format(axisFormatString);
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211 while ((toLabel.length > 1) && (toLabel.indexOf("0")==0))
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212 toLabel = toLabel.substring(1);
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213 highlightString = fromLabel + " - " + toLabel + " : ";
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214 //(max.)2 Nachkomma-Stellen von y-Wert anzeigen
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215 highlightString += Math.round(yval*100)/100;
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216
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217 return highlightString;
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218 }
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219 },
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220 selection: {
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221 mode: "x"
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222 }
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223 };
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224 if (!rangeBar.parent.options.showYAxis)
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225 options.yaxis.show=false;
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226
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227 var highlight_select_plot_colors = [];
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228 var i = 0;
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229 $(highlight_select_plot).each(function(){
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230 var color;
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231 if (i < GeoTemConfig.datasets.length){
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232 var datasetColors = GeoTemConfig.getColor(i);
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233 if (highlight_select_plot.length>GeoTemConfig.datasets.length)
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234 color = "rgb("+datasetColors.r0+","+datasetColors.g0+","+datasetColors.b0+")";
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235 else
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236 color = "rgb("+datasetColors.r1+","+datasetColors.g1+","+datasetColors.b1+")";
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237 } else {
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238 var datasetColors = GeoTemConfig.getColor(i-GeoTemConfig.datasets.length);
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239 color = "rgb("+datasetColors.r1+","+datasetColors.g1+","+datasetColors.b1+")";
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240 }
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241
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242 highlight_select_plot_colors.push({
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243 color : color,
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244 data : this
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245 });
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246 i++;
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247 });
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248
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249 $(rangeBar.plotDiv).unbind();
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250 rangeBar.plot = $.plot($(rangeBar.plotDiv), highlight_select_plot_colors, options);
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251 rangeBar.parent.drawHandles();
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252
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253 var density = rangeBar.parent.density;
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254 if (typeof density !== "undefined")
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255 $(rangeBar.plotDiv).unbind("plothover", density.hoverFunction);
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256 $(rangeBar.plotDiv).unbind("plothover", rangeBar.hoverFunction);
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257 $(rangeBar.plotDiv).bind("plothover", $.proxy(rangeBar.hoverFunction,rangeBar));
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258
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259 //this var prevents the execution of the plotclick event after a select event
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260 rangeBar.wasSelection = false;
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261 $(rangeBar.plotDiv).unbind("plotclick");
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262 $(rangeBar.plotDiv).bind("plotclick", $.proxy(rangeBar.clickFunction,rangeBar));
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263
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264 $(rangeBar.plotDiv).unbind("plotselected");
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265 $(rangeBar.plotDiv).bind("plotselected", $.proxy(rangeBar.selectFunction,rangeBar));
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266 },
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267
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268 hoverFunction : function (event, pos, item) {
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269 var rangeBar = this;
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270 var hoverBar;
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271 var spans;
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272 if (item) {
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273 hoverBar = item.datapoint[0];
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274 }
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275 //remember last date, so that we don't redraw the current state
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276 //that date may be undefined is on purpose
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277 if (rangeBar.highlighted !== hoverBar){
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278 rangeBar.highlighted = hoverBar;
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279 if (typeof hoverBar === "undefined")
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280 rangeBar.triggerHighlight();
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281 else
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282 rangeBar.triggerHighlight(hoverBar);
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283 }
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284 },
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285
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286 clickFunction : function (event, pos, item) {
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287 var rangeBar = this;
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288 if (rangeBar.wasSelection)
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289 rangeBar.wasSelection = false;
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290 else {
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291 //remove selection handles (if there were any)
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292 rangeBar.parent.clearHandles();
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293
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294 var clickBar;
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295 if (item) {
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296 //contains the x-value (date)
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297 clickBar = item.datapoint[0];
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298 }
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299 if (typeof clickBar === "undefined")
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300 rangeBar.triggerSelection();
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301 else
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302 rangeBar.triggerSelection(clickBar);
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303 wasDataClick = true;
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304 }
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305 },
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306
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307 selectFunction : function(event, ranges) {
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308 var rangeBar = this;
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309 startBar = Math.floor(ranges.xaxis.from);
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310 endBar = Math.floor(ranges.xaxis.to);
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311 rangeBar.triggerSelection(startBar, endBar);
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312 rangeBar.wasSelection = true;
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313
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314 rangeBar.parent.clearHandles();
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315 var xaxis = rangeBar.plot.getAxes().xaxis;
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316 var x1 = rangeBar.plot.pointOffset({x:ranges.xaxis.from,y:0}).left;
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317 var x2 = rangeBar.plot.pointOffset({x:ranges.xaxis.to,y:0}).left;
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318 rangeBar.parent.addHandle(x1,x2);
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319 },
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320
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321 selectByX : function(x1, x2){
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322 rangeBar = this;
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323 var xaxis = rangeBar.plot.getAxes().xaxis;
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324 var offset = rangeBar.plot.getPlotOffset().left;
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325 var from = Math.floor(xaxis.c2p(x1-offset));
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326 var to = Math.floor(xaxis.c2p(x2-offset));
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327
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328 rangeBar.triggerSelection(from, to);
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329 },
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330
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331 drawRangeBarChart : function(datasets, spanWidth){
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332 var rangeBar = this;
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333 rangeBar.spanWidth = spanWidth;
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334 rangeBar.tickSpans = rangeBar.parent.getSpanArray(rangeBar.spanWidth);
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335 //-1 because last span is always empty (only there to have the ending date)
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336 var tickCount = rangeBar.tickSpans.length-1;
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337
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338 if (tickCount > rangeBar.options.maxBars){
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339 var zoomFactor = tickCount / rangeBar.options.maxBars;
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340 rangeBar.parent.zoomPlot(zoomFactor);
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341 } else
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342 rangeBar.parent.zoomPlot(1);
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343
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344 rangeBar.yValMin = 0;
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345 rangeBar.yValMax = 0;
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346
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347 var plotAndHash = rangeBar.createPlot(datasets);
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348 rangeBar.datasetsPlot = plotAndHash.plots;
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349 rangeBar.datasetsHash = plotAndHash.hashs;
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350 delete rangeBar.highlightedDatasetsPlot;
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351 //redraw selected plot to fit (possible) new scale
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352 rangeBar.selectionChanged(rangeBar.selected);
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353
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354 //get min and max values
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355 for (var i = 0; i < rangeBar.datasetsPlot.length; i++){
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356 for (var j = 0; j < rangeBar.datasetsPlot[i].length; j++){
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357 if (typeof rangeBar.datasetsPlot[i][j] !== "undefined"){
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358 var val = rangeBar.datasetsPlot[i][j][1];
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359
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360 if (val < rangeBar.yValMin)
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361 rangeBar.yValMin = val;
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362 if (val > rangeBar.yValMax)
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363 rangeBar.yValMax = val;
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364 }
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365 }
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366 }
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367
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368 rangeBar.showPlot();
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369 },
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370
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371 highlightChanged : function(objects) {
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372 if( !GeoTemConfig.highlightEvents ){
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373 return;
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374 }
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375 var rangeBar = this;
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376 var emptyHighlight = true;
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377 var selected_highlighted = objects;
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378 if (typeof rangeBar.selected !== "undefined")
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379 var selected_highlighted = GeoTemConfig.mergeObjects(objects,rangeBar.selected);
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380 $(selected_highlighted).each(function(){
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381 if ((this instanceof Array) && (this.length > 0)){
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382 emptyHighlight = false;
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383 return false;
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384 }
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385 });
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386 if (emptyHighlight && (typeof rangeBar.selected === "undefined")){
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387 rangeBar.highlightedDatasetsPlot = [];
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388 } else {
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389 rangeBar.highlightedDatasetsPlot = rangeBar.createPlot(selected_highlighted).plots;
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390 }
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391 rangeBar.showPlot();
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392 },
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393
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394 selectionChanged : function(objects) {
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395 if( !GeoTemConfig.selectionEvents ){
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396 return;
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397 }
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398 var rangeBar = this;
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399 rangeBar.selected = objects;
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400 rangeBar.highlightChanged([]);
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401 },
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402
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403 triggerHighlight : function(hoverPoint) {
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404 var rangeBar = this;
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405 var highlightedObjects = [];
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406
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407 if (typeof hoverPoint !== "undefined"){
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408 $(rangeBar.datasetsHash).each(function(){
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409 if (typeof this[hoverPoint] !== "undefined")
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410 highlightedObjects.push(this[hoverPoint]);
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411 else
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412 highlightedObjects.push([]);
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413 });
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414 } else {
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415 for (var i = 0; i < GeoTemConfig.datasets.length; i++)
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416 highlightedObjects.push([]);
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417 }
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418
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419 this.parent.core.triggerHighlight(highlightedObjects);
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420 },
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421
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422 triggerSelection : function(startBar, endBar) {
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423 var rangeBar = this;
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424 var selection;
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425 if (typeof startBar !== "undefined") {
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426 if (typeof endBar === "undefined")
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427 endBar = startBar;
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428 rangeBar.selected = [];
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429 $(rangeBar.datasetsHash).each(function(){
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430 var objects = [];
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431 for (var i = startBar; i <= endBar; i++){
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432 $(this[i]).each(function(){
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433 if ($.inArray(this, objects) == -1){
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434 objects.push(this);
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435 }
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436 });
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437 }
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438 rangeBar.selected.push(objects);
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439 });
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440 selection = new Selection(rangeBar.selected, rangeBar.parent);
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441 } else {
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442 rangeBar.selected = [];
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443 for (var i = 0; i < GeoTemConfig.datasets.length; i++)
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444 rangeBar.selected.push([]);
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445 selection = new Selection(rangeBar.selected);
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446 }
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447
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448 rangeBar.parent.selectionChanged(selection);
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449 rangeBar.parent.core.triggerSelection(selection);
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450 },
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451
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452 deselection : function() {
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453 },
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454
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455 filtering : function() {
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456 },
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457
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458 inverseFiltering : function() {
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459 },
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460
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461 triggerRefining : function() {
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462 },
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463
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464 reset : function() {
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465 },
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466
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467 show : function() {
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468 },
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469
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470 hide : function() {
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471 }
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472 };