This sample shows how you can configure a temporal renderer to perform time-based rendering of features in a feature layer. This type of renderer is useful to visualize historic or real-time data, in this case earthquakes.
The temporal renderer allows you to define how observations and tracks are rendered. In this sample, an observation renderer is defined using a class breaks renderer. The class breaks renderer is used to define symbols by magnitude, the larger the magnitude the larger the symbol.
Next a symbol ager is defined, the ager determines how the feature's symbol changes as time progresses. The color for each symbol is modified as time progresses.
<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no"> <title>Recent Earthquakes</title> <link rel="stylesheet" href="https://js.arcgis.com/3.46/dijit/themes/claro/claro.css"> <link rel="stylesheet" href="https://js.arcgis.com/3.46/esri/css/esri.css"> <style> html, body { height: 100%; width: 100%; margin: 0; padding: 0; } .dijitBorders{ margin:5px 5px 5px 5px; border:solid thin #9CAA9C; border-radius: 4px; } .labelText{ color:#9CAA9C; font-size:12pt; font-family:"Tahoma"; margin:5px; } .headerText{ color:#9CAA9C; font-size:16pt; font-weight:bold; font-family: "Tahoma"; } </style> <script src="https://js.arcgis.com/3.46/"></script> <script> var map, timeSlider; require([ "esri/map", "esri/layers/FeatureLayer", "esri/TimeExtent", "esri/layers/TimeInfo", "esri/renderers/ClassBreaksRenderer", "esri/symbols/SimpleMarkerSymbol", "esri/symbols/SimpleLineSymbol", "esri/dijit/editing/TemplatePicker", "esri/dijit/TimeSlider", "esri/renderers/TimeClassBreaksAger", "esri/renderers/TemporalRenderer", "dojo/parser", "dojo/_base/array", "esri/Color", "dojo/dom", "dojo/date", "dijit/layout/BorderContainer", "dijit/layout/ContentPane", "dojo/domReady!" ], function( Map, FeatureLayer, TimeExtent, TimeInfo, ClassBreaksRenderer, SimpleMarkerSymbol, SimpleLineSymbol, TemplatePicker, TimeSlider, TimeClassBreaksAger, TemporalRenderer, parser, arrayUtils, Color, dom, date ) { parser.parse(); map = new Map("map", { basemap: "streets-vector", center: [-98, 37.2], slider: false, zoom:9 }); map.on("load", mapLoaded); function mapLoaded() { // feature layer var featureLayer = new FeatureLayer("https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/ks_earthquakes_since_2000/FeatureServer/0", { mode: FeatureLayer.MODE_SNAPSHOT, outFields: [ "*" ] }); var timeExtent = new TimeExtent(); timeExtent.endTime = new Date("11/1/2015"); timeExtent.startTime = new Date("11/1/2014"); featureLayer.setDefinitionExpression("mag > 2"); featureLayer.setTimeDefinition(timeExtent); featureLayer.on("load", featureLayerLoaded); // temporal renderer var observationRenderer = new ClassBreaksRenderer(new SimpleMarkerSymbol(), "mag"); observationRenderer.addBreak(7, 12, new SimpleMarkerSymbol(SimpleMarkerSymbol.STYLE_SQUARE, 24, new SimpleLineSymbol().setStyle(SimpleLineSymbol.STYLE_SOLID).setColor(new Color([100,100,100])),new Color([0,0,0,0]))); observationRenderer.addBreak(6, 7, new SimpleMarkerSymbol(SimpleMarkerSymbol.STYLE_SQUARE, 21, new SimpleLineSymbol().setStyle(SimpleLineSymbol.STYLE_SOLID).setColor(new Color([100,100,100])),new Color([0,0,0,0]))); observationRenderer.addBreak(5, 6, new SimpleMarkerSymbol(SimpleMarkerSymbol.STYLE_SQUARE, 18,new SimpleLineSymbol().setStyle(SimpleLineSymbol.STYLE_SOLID).setColor(new Color([100,100,100])),new Color([0,0,0,0]))); observationRenderer.addBreak(4, 5, new SimpleMarkerSymbol(SimpleMarkerSymbol.STYLE_SQUARE, 15,new SimpleLineSymbol().setStyle(SimpleLineSymbol.STYLE_SOLID).setColor(new Color([100,100,100])),new Color([0,0,0,0]))); observationRenderer.addBreak(3, 4, new SimpleMarkerSymbol(SimpleMarkerSymbol.STYLE_SQUARE, 12,new SimpleLineSymbol().setStyle(SimpleLineSymbol.STYLE_SOLID).setColor(new Color([100,100,100])),new Color([0,0,0,0]))); observationRenderer.addBreak(2, 3, new SimpleMarkerSymbol(SimpleMarkerSymbol.STYLE_SQUARE, 9,new SimpleLineSymbol().setStyle(SimpleLineSymbol.STYLE_SOLID).setColor(new Color([100,100,100])),new Color([0,0,0,0]))); observationRenderer.addBreak(0, 2, new SimpleMarkerSymbol(SimpleMarkerSymbol.STYLE_SQUARE, 6,new SimpleLineSymbol().setStyle(SimpleLineSymbol.STYLE_SOLID).setColor(new Color([100,100,100])),new Color([0,0,0,0]))); //build a legend for the temporal renderer using the template picker var symbols = arrayUtils.map(observationRenderer.infos,function(info){ return {label: info.minValue + " - " + info.maxValue,symbol:info.symbol}; }); symbols.reverse(); //flip the array so the lowest magnitude symbol displays on top var infos = [ { minAge: 48, maxAge: Infinity, color: new dojo.Color([255,0,0])}, { minAge: 24, maxAge: 48, color: new dojo.Color([49,154,255])}, { minAge: 0, maxAge: 24, color: new dojo.Color([255,255,8])} ]; var ageSymbols = []; ageSymbols.push({label: "Less than 1 month",symbol: new SimpleLineSymbol().setStyle(SimpleLineSymbol.STYLE_SOLID).setColor(new Color([255,0,0])).setWidth(10)}); ageSymbols.push({label: "1 - 6 months",symbol: new SimpleLineSymbol().setStyle(SimpleLineSymbol.STYLE_SOLID).setColor(new Color([49,154,255])).setWidth(10)}); ageSymbols.push({label: "6+ months",symbol: new SimpleLineSymbol().setStyle(SimpleLineSymbol.STYLE_SOLID).setColor(new Color([255,255,8])).setWidth(10)}); var legend = new TemplatePicker({ items : symbols, rows: 7, columns: 1 }, "magnitudeDiv"); legend.startup(); var legend2 = new TemplatePicker({ items : ageSymbols, rows: 3, columns: 1 }, "ageDiv"); legend2.startup(); var ager = new TimeClassBreaksAger(infos, TimeClassBreaksAger.UNIT_WEEKS); var renderer = new TemporalRenderer(observationRenderer, null, null, ager); featureLayer.setRenderer(renderer); map.addLayer(featureLayer); //resize the map when the browser resizes // registry.byId("map").on("resize", map.resize); } function featureLayerLoaded(evt) { // create time slider timeSlider = new TimeSlider({ style: "width: 100%;"}, dom.byId("timeSliderDiv")); timeSlider.setThumbCount(1); timeSlider.createTimeStopsByTimeInterval(evt.layer.getTimeDefinition(), 1, TimeInfo.UNIT_WEEKS); timeSlider.setThumbIndexes([0]); timeSlider.on("time-extent-change", displayTimeInfo); timeSlider.startup(); map.setTimeSlider(timeSlider); timeSlider.play(); } function displayTimeInfo(timeExtent) { var info = timeExtent.startTime.toDateString() + " <i>to<\/i> " + timeExtent.endTime.toUTCString(); dom.byId("timeInfo").innerHTML = info; } }); </script> </head> <body class="claro"> <div id="mainWindow" data-dojo-type="dijit/layout/BorderContainer" data-dojo-propx="design:'sidebar', gutters:true" style="width:100%; height:100%;"> <div id="header" data-dojo-type="dijit/layout/ContentPane" data-dojo-props="region:'top'" class="dijitBorders" style="height:100px;"> <center> <span class="headerText">Recent Earthquakes</span> <div id="timeInfo" class="labelText"></div> <div id="timeSliderDiv" ></div> </center> </div> <div id="map" data-dojo-type="dijit/layout/ContentPane" data-dojo-props="region:'center'" class="dijitBorders" style="background-color:inherit;"> </div> <div id="right" data-dojo-type="dijit/layout/ContentPane" data-dojo-props="region:'left'" style="width:100px;font-size:small;"> <center><span class="labelText">Age</span></center> <div id="ageDiv" class="dijitBorders"></div> <center><span class="labelText">Magnitude</span></center> <div id="magnitudeDiv" class="dijitBorders" ></div> </div> </div> </body> </html>