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Query Task Fails Unless I pass in exact coordinates...

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02-01-2011 10:18 AM
GISAdmin1
by
Regular Contributor
‎02-01-2011 10:18 AM
Hi there,

I have a simple query task defined for a point layer.  When I override the xy returned from the map with the exact coordinates of the feature, the task works.  Otherwise, no features are identified.  Is there a tolerance parameter I can apply?


function executeQueryTask(evt) {
      
         query.geometry = evt.mapPoint;
                //alert (evt.mapPoint.x + " - " + evt.mapPoint.y )
        evt.mapPoint.x= 511704.446;
        evt.mapPoint.y = 5437075.128;
  queryTask.execute(query, showResults);
 
}
       
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1 Reply
KellyHutchins
by Esri Notable Contributor
Esri Notable Contributor
‎02-01-2011 05:08 PM
The identify task allows you to specify a tolerance but the query task does not.

http://help.arcgis.com/EN/webapi/javascript/arcgis/help/jsapi_start.htm#jsapi/identifytask.htm

If you want to use the query task to query points you'll have to generate a tolerance. This blog post has some sample code that does this:

http://blogs.esri.com/Dev/blogs/arcgisserver/archive/2009/01/15/Querying-points-and-lines-on-click-w...
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