Geometry union for a query

IbrahimHussein

Hey guys, I have an array of geometries and im trying to union them together to do a query.

this is my code: Edit fiddle - JSFiddle  line 683 is where the function in question is located.

the error I get is

Uncaught TypeError: Cannot read property 'wkid' of undefined

Any idea what Im doing wrong? is it a spatial reference issue?

RobertScheitlin__GISP

Ibrahim,

  GeometryService Union method is not instantaneous. It requires a call back function before you can use the results.

var gs = new esri.tasks.GeometryService("http://tasks.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer");

        gs.union(geometry);

        query.geometry = gs;

​Basically in your code above you are sending the GeometryService to the query.geometry and not the results of the union.

Try something like this:

        var gs = new esri.tasks.GeometryService("http://tasks.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer");
        gs.union(geometry, function(results){
          query.geometry = results;
          query.outFields = ["*"];
          myQueryTask.execute(query, censusGrid);
        });