Hi, I'm new at both javascript and the esri javascript api and trying to incorporate the code provided by horn76 into the measuring sample (http://help.arcgis.com/en/webapi/javascript/arcgis/help/jssamples/util_measureline.html) Turning off the measuring works fine, but it won't turn back on again. Anyone care to tell me what I'm doing wrong? Thanks! <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<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>Measure Distances</title>
<link rel="stylesheet" type="text/css" href="http://serverapi.arcgisonline.com/jsapi/arcgis/2.1/js/dojo/dijit/themes/claro/claro.css">
<script src="http://serverapi.arcgisonline.com/jsapi/arcgis/?v=2.1" type="text/javascript"></script>
<script type="text/javascript">
dojo.require("esri.map");
dojo.require("esri.tasks.geometry");
dojo.require("esri.toolbars.draw");
dojo.require("dojo.number");
var geometryService;
function init() {
//identify proxy page to use if the toJson payload to the geometry service is greater than 2000 characters.
//If this null or not available the project and lengths operation will not work. Otherwise it will do a http post to the proxy.
esriConfig.defaults.io.proxyUrl = "/arcgisserver/apis/javascript/proxy/proxy.ashx";
esriConfig.defaults.io.alwaysUseProxy = false;
var startExtent = new esri.geometry.Extent(-80.0571,41.3697,-74.4321,44.0822, new esri.SpatialReference({wkid:4326}) );
var map = new esri.Map("map", {extent:startExtent});
dojo.connect(map, "onLoad", initGeometrie);
map.addLayer(new esri.layers.ArcGISTiledMapServiceLayer("http://server.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer"));
geometryService = new esri.tasks.GeometryService("http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer");
dojo.connect(geometryService, "onLengthsComplete", outputDistance);
dojo.connect(geometryService, "onProjectComplete", function(graphics) {
//call GeometryService.lengths() with projected geometry
geometryService.lengths(graphics);
});
}
function outputDistance(result) {
dojo.byId("distance").innerHTML = dojo.number.format(result.lengths[0] / 1000) + " kilometers";
}
function initGeometrie(map) {
tb = new esri.toolbars.Draw(map);
var lengthParams = new esri.tasks.LengthsParameters();
dojo.connect(tb, "onDrawEnd", function(geometry) {
map.graphics.clear();
lengthParams.polylines = [geometry];
lengthParams.lengthUnit = esri.tasks.GeometryService.UNIT_METER;
lengthParams.geodesic = true;
geometryService.lengths(lengthParams);
var graphic = map.graphics.add(new esri.Graphic(geometry, new esri.symbol.SimpleLineSymbol()));
});
tb.activate(esri.toolbars.Draw.FREEHAND_POLYLINE);
}
function disconGeometrie(){ // stop measure of geometry
tb.deactivate();
}
dojo.addOnLoad(init);
</script>
</head>
<body>
<input type="button" value="measure" onclick="initGeometrie(map)"/><input type="button" value="no measure" onclick="disconGeometrie()"/>
Click and hold down on the map to draw a line that will be added to the map. The application will then use the geometry service to project and compute the length of the line.
<div id="map" class="claro" style="width:1024px; height:512px; border:1px solid #000;"></div>
Distance: <span id="distance"></span>
</body>
</html>
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