buffering features based on graphic extent instead of the graphic

eddiequinlan — Fri, 16 Apr 2010 17:01:04 GMT

Can anyone solve this problem? I've been fighting this for 3 months.

I have my own java code to buffer a parcel layer based on a graphic( ie radius). However, I noticed the returned results seem to be based on the extent of the graphic and not the actual graphic itself. I decided to copy the exact code from the "Community Gallery" for JAVA titled "Query parcels with buffer, show results in DojoX grid" and see what kind of results I get.

When I run the code pointing to the ESRI data the app runs fine. Then, I went thru and only changed the urls to my data and a couple of the variable names; this is when it stopped working. I discovered the problem to be the same as in my own java app.

Here is where I believe the issue is:

+++++Listen for GeometryService onBufferComplete event+++++
        dojo.connect(gsvc, "onBufferComplete", function(graphics) {
          // Add the buffer to the screen
          var symbol = new esri.symbol.SimpleFillSymbol("none", new esri.symbol.SimpleLineSymbol
                  ("dashdot", new dojo.Color([200,0,0]), 3), new dojo.Color([255,255,0,0.25]));
          var graphic = new esri.Graphic(graphics[0].geometry,symbol);
          map.graphics.add(graphic);

          // Set the query geometry equal to the buffer
          queryBufferedParcels.geometry = graphic.geometry.getExtent(); //Works but returns results based on extent.
          //queryBufferedParcels.geometry = graphic.geometry;

          // Query for parcels within the buffer
          queryTaskBufferedParcels.execute(queryBufferedParcels);

        });

The original ESRI example has "queryBufferedParcels.geometry = graphic.geometry;". However this doesn't work with my data, but does with the ESRI url.

When I change it to "queryBufferedParcels.geometry = graphic.geometry.getExtent(); ", everything works great, but the results returned lie outside of the buffered graphic and are based on the graphic extent (obviously graphic.geometry.getExtent()).

I'm puzzeled why the url data would make a difference and/or why the "graphic.geometry" won't work.

Thank you,
Eddie Q.

topic buffering features based on graphic extent instead of the graphic in ArcGIS JavaScript Maps SDK Questions

buffering features based on graphic extent instead of the graphic