arcgis for js开发,根据给定的经纬度在地图上进行标注_arcgis js api 根据经纬度打点样式 demo-优快云博客

本文介绍了一个使用JavaScript进行ArcGIS开发的例子，重点展示了如何利用Dojo框架结合ArcGIS API实现地图服务加载、坐标点击事件响应及点要素的添加等功能。

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基于js的arcgis开发，需要学习以下知识：

1. 地理信息相关的基础知识

2. dojo js框架的学习

3. arcgis for js api的熟悉（https://developers.arcgis.com/javascript/jsapi/polygon-amd.html）

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>My fisrt ArcGis Map</title>
<link rel="stylesheet" type="text/css"
href="http://localhost:8080/gis/arcgis_js/js/dojo/dijit/themes/tundra/tundra.css" />
<link rel="stylesheet" type="text/css"
href="http://localhost:8080/gis/arcgis_js/js/esri/css/esri.css" />
<script type="text/javascript"
src="http://localhost:8080/gis/arcgis_js/init.js"></script>
<script type="text/javascript">


var myMap;


require([
  "esri/map", "esri/toolbars/draw",
  "esri/symbols/SimpleMarkerSymbol", "esri/symbols/SimpleLineSymbol","esri/symbols/PictureMarkerSymbol","esri/geometry/Point","esri/layers/GraphicsLayer",
  "esri/symbols/PictureFillSymbol", "esri/symbols/CartographicLineSymbol", "esri/SpatialReference","esri/InfoTemplate",
  "esri/graphic", 
  "dojo/_base/Color", "dojo/dom", "dojo/on", "dojo/domReady!"
], function(
  Map, Draw,
  SimpleMarkerSymbol, SimpleLineSymbol,PictureMarkerSymbol,Point,GraphicsLayer,
  PictureFillSymbol, CartographicLineSymbol, SpatialReference,InfoTemplate,
  Graphic, 
  Color, dom, on
) {

myMap = new Map("arcgisDiv");

dojo.connect(myMap, "onClick", showCoordinatesAndAddPoint);
dojo.connect(myMap, "onLoad", graphicLoad);

var myTiledMapServiceLayer = new esri.layers.ArcGISTiledMapServiceLayer(
"http://192.168.254.161:8080/arcgis/rest/services/GISServer/farmland/ImageServer"); 

myMap.addLayer(myTiledMapServiceLayer);




  function showCoordinatesAndAddPoint(evt) {
 //get mapPoint from event
 var mp = evt.mapPoint; // 可以从mp对象的属性中查找到图层对应的wkid的值，这个值和下面红色注释的值要保持一致
 //display mouse coordinates
 dojo.byId("info").innerHTML = mp.x + ", " + mp.y;
 
     // 102100
     var newPoint = new Point(mp.x, mp.y, new SpatialReference({ wkid: 102100 }));
     
     var picSymbol = new PictureMarkerSymbol("http://localhost:8080/gis/images/chaosu.png", 20, 20);
     var picGraphic = new Graphic(newPoint, picSymbol);
     
     myMap.graphics.add(picGraphic);
     
}


function graphicLoad()
{

   // new SpatialReference({ wkid: 102100 }) 这个参数必须加，而且wkid的值要和图层保持一致，否则显示不出来，这个值可以从


     var newPoint = new Point(13184586.725552682, 3951448.604221201, new SpatialReference({ wkid: 102100 }));
   
    var picSymbol = new PictureMarkerSymbol("http://localhost:8080/gis/images/chaosu.png", 20, 20);
    var picGraphic = new Graphic(newPoint, picSymbol);
    
    var infoTemplate = new InfoTemplate();
        infoTemplate.setTitle("hello world");
        infoTemplate.setContent("hello world说说撒 hello world");
        
        picGraphic.setInfoTemplate(infoTemplate);
    myMap.graphics.add(picGraphic);
  
}
});


</script>
</head>
<body class="tundra">
<div id="arcgisDiv"
style="width: 900px; height: 600px; border: 1px solid #000;"></div>
<div id="info"></div>
</body>
</html>

转载地址

http://blog.youkuaiyun.com/yangsen251024/article/details/22807499