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Temporal renderer
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Description
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.
Code
<!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/3.26/dijit/themes/claro/claro.css">
<link rel="stylesheet" href="https://js.arcgis.com/3.26/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;
-moz-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/3.26/"></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",
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>