NIM065979 for ArcGIS API for JavaScript

Numéro d’ID de bogue	NIM065979
Envoi	March 15, 2011
Dernière modification	June 5, 2024
S’applique à	ArcGIS API for JavaScript
Version trouvée	2.2
Langue du programme	JavaScript
Version de correction	2.2
Statut	Fixed

Informations supplémentaires

This sample was using a deprecated service. I fixed the sample and published it to the help system, here's a link to the working sample:

Solution de contournement

Sample code with another map service.<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "<a href="http://www.w3.org/TR/html4/strict.dtd" target="_blank">http://www.w3.org/TR/html4/strict.dtd</a>"><html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=7" />  <meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no"/> <title>Simplify a polygon</title> <link rel="stylesheet" type="text/css" href="<a href="http://serverapi.arcgisonline.com/jsapi/arcgis/2.2/js/dojo/dijit/themes/claro/claro.css" target="_blank">http://serverapi.arcgisonline.com/jsapi/arcgis/2.2/js/dojo/dijit/themes/claro/claro.css</a>"> <script src="<a href="http://serverapi.arcgisonline.com/jsapi/arcgis/?v=2.2" target="_blank">http://serverapi.arcgisonline.com/jsapi/arcgis/?v=2.2</a>" type="text/javascript"></script> <script type="text/javascript"> dojo.require("esri.map"); dojo.require("esri.tasks.geometry"); dojo.require("esri.geometry"); var map = null; var gsvc = null; var qtask = null; var polygonGraphic = null; var queryGraphic = null; function initialize() { map = new esri.Map("map"); dojo.connect(map, "onLoad", function () { drawPolygon(); }); var layer = new esri.layers.ArcGISDynamicMapServiceLayer("<a href="http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/BloomfieldHillsMichigan/Parcels/MapServer" target="_blank">http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/BloomfieldHillsMichigan/Parcels/MapServer</a>"); map.addLayer(layer); //map.setExtent(new esri.geometry.Extent(-85.974236093929, 37.8793271200451, -85.3777322115035, 38.4978151750415, new esri.SpatialReference({wkid: 4326}))); gsvc = new esri.tasks.GeometryService("<a href="http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer" target="_blank">http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer</a>"); qtask = new esri.tasks.QueryTask("<a href="http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/BloomfieldHillsMichigan/Parcels/MapServer/2" target="_blank">http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/BloomfieldHillsMichigan/Parcels/MapServer/2</a>"); } function drawPolygon() { var latOffset, lonOffset, center, lat, lon, points; ///// Get map center center = map.extent.getCenter(); lat = center.y; lon = center.x + 500; ///// Create a Green Polygon latOffset = 500; lonOffset = 500; points = [ new esri.geometry.Point(lon - lonOffset, lat), new esri.geometry.Point(lon, lat + latOffset), new esri.geometry.Point(lon + lonOffset, lat), new esri.geometry.Point(lon, lat - latOffset), new esri.geometry.Point(lon - lonOffset, lat), new esri.geometry.Point(lon - 2 * lonOffset, lat + latOffset), new esri.geometry.Point(lon - 3 * lonOffset, lat), new esri.geometry.Point(lon - 2 * lonOffset, lat - latOffset), new esri.geometry.Point(lon - 1.5 * lonOffset, lat + latOffset), new esri.geometry.Point(lon - lonOffset, lat) ]; var polygon = new esri.geometry.Polygon(); polygon.addRing(points); polygon.spatialReference = new esri.SpatialReference({ wkid: 2253}); // Add the polygon to map var symbol = new esri.symbol.SimpleFillSymbol().setStyle(esri.symbol.SimpleFillSymbol.STYLE_SOLID); polygonGraphic = new esri.Graphic(polygon, symbol); map.graphics.add(polygonGraphic); } function doSimplify() { gsvc.simplify([ polygonGraphic.geometry ], simplifyCallback); } function simplifyCallback(geometries) { alert("Number of Rings returned by Simplify operation = " + geometries[0].rings.length); polygonGraphic.setGeometry(geometries[0]); doQuery(polygonGraphic); // select a ring to do query } function doQuery(polygonGraphic) { var query = new esri.tasks.Query(); //query.spatialRelationship = esri.tasks.Query.SPATIAL_REL_INTERSECTS; query.spatialRelationship = esri.tasks.Query.SPATIAL_REL_CONTAINS; query.geometry = polygonGraphic.geometry; query.returnGeometry = true; qtask.execute(query, queryCallback); //alert(query); } function queryCallback(featureSet) { map.graphics.remove(queryGraphic); var symbol = new esri.symbol.SimpleFillSymbol(esri.symbol.SimpleFillSymbol.STYLE_SOLID, new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_SOLID, new dojo.Color([0,0,255,255]), 2), new dojo.Color([0,0,255,0.35])); var features = featureSet.features; //alert("Features : " +features); var polys = new esri.geometry.Polygon(); //For performance, push all featureSet polygons into polys geometry. //Users will not be able to query individual polygons, but the display will be faster for (var j=0, jl=features.length; j<jl; j++) { var featureGeom = features[j].geometry; for (var k=0, kl=featureGeom.rings.length; k<kl; k++) { var featureGeomRing = featureGeom.rings[k]; polys.addRing(featureGeomRing); } } //alert(polys); queryGraphic = new esri.Graphic(polys,symbol) map.graphics.add(queryGraphic); //alert("Inside querycall back"); } dojo.addOnLoad(initialize); </script></head><body class="claro"> Many spatial operations require topologically correct geometry. <br/><input type="button" value="Simplify the polygon and Do a Query with simplified polygon" onclick="doSimplify();" /> <br/>If you try to use the self-intersecting geometry above without simplifying it you will get incorrect results. <br/><input type="button" value="Execute query task without simplifying polygon" onclick="doQuery(polygonGraphic);" /> <div id="map" style="width:600px; height:400px; border:1px solid #000;"></div></body></html>