Dojo ArcGIS Javascript API-如何向现有地图添加多个状态？
我对ARCGIS不熟悉。有人能告诉我如何在现有代码中添加新泽西州和特拉华州两个州吗？所以它和纽约一起展出 是否还有一个通配符选项来添加所有州Dojo ArcGIS Javascript API-如何向现有地图添加多个状态？,dojo,arcgis,esri,arcgis-js-api,esri-arc-engine,Dojo,Arcgis,Esri,Arcgis Js Api,Esri Arc Engine,我对ARCGIS不熟悉。有人能告诉我如何在现有代码中添加新泽西州和特拉华州两个州吗？所以它和纽约一起展出 是否还有一个通配符选项来添加所有州 <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <!--The viewport meta tag is used to improve
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<!--The viewport meta tag is used to improve the presentation and behavior of the samples
on iOS devices-->
<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no">
<title>Class Breaks Renderer</title>
<link rel="stylesheet" href="http://js.arcgis.com/3.11/esri/css/esri.css">
<style>
html, body, #map{
height: 100%;
margin: 0;
padding: 0;
}
</style>
<script src="http://js.arcgis.com/3.11/"></script>
<script>
//https://developers.arcgis.com/javascript/jssamples/renderer_class_breaks.html
var map;
require([
"esri/map", "esri/layers/FeatureLayer",
"esri/InfoTemplate", "esri/symbols/SimpleFillSymbol",
"esri/renderers/ClassBreaksRenderer",
"esri/Color", "dojo/dom-style", "dojo/domReady!"
], function(
Map, FeatureLayer,
InfoTemplate, SimpleFillSymbol,
ClassBreaksRenderer,
Color, domStyle
) {
map = new Map("map", {
basemap: "streets",
center: [-74.215, 42.382],
zoom: 7,
slider: false
});
var symbol = new SimpleFillSymbol();
symbol.setColor(new Color([150, 150, 150, 0.5]));
// Add five breaks to the renderer.
// If you have ESRI's ArcMap available, this can be a good way to determine break values.
// You can also copy the RGB values from the color schemes ArcMap applies, or use colors
// from a site like www.colorbrewer.org
//
// alternatively, ArcGIS Server's generate renderer task could be used
var renderer = new ClassBreaksRenderer(symbol, "POP07_SQMI");
renderer.addBreak(0, 25, new SimpleFillSymbol().setColor(new Color([56, 168, 0, 0.5])));
renderer.addBreak(25, 75, new SimpleFillSymbol().setColor(new Color([139, 209, 0, 0.5])));
renderer.addBreak(75, 175, new SimpleFillSymbol().setColor(new Color([255, 255, 0, 0.5])));
renderer.addBreak(175, 400, new SimpleFillSymbol().setColor(new Color([255, 128, 0, 0.5])));
renderer.addBreak(400, Infinity, new SimpleFillSymbol().setColor(new Color([255, 0, 0, 0.5])));
var infoTemplate = new InfoTemplate("${NAME}", "${*}");
var featureLayer = new FeatureLayer("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Census_USA/MapServer/3", {
mode: FeatureLayer.MODE_SNAPSHOT,
outFields: ["*"],
infoTemplate: infoTemplate
});
featureLayer.setDefinitionExpression("STATE_NAME = 'New York'");
featureLayer.setRenderer(renderer);
map.addLayer(featureLayer);
});
</script>
</head>
<body>
<div id="map"></div>
</body>
</html>
您只需要修改示例中的定义表达式以包含其他状态，这样您就可以说
featureLayer.setDefinitionExpression("STATE_NAME IN ('New York', 'New Jersey', 'Delaware')");