topic Re: Merging overlapping layers into one. in Geoprocessing Questions

Merging overlapping layers into one.

MarleneSanchez — Mon, 13 Oct 2014 20:01:30 GMT

I am looking for a way to do a spatial union on multiple overlapping polygons. I haven't had much luck using the geoprocessing tools.

Is there a way to create a single layer by merging multiple layers? I am not concerned with preserving the attributes of all the polygons, just want to display the area coverage.

Thank you

Re: Merging overlapping layers into one.

JakeSkinner — Mon, 13 Oct 2014 20:07:19 GMT

Hi Marlene,

Take a look at the Union or Merge tools. If you're looking at just preserving the overlapping areas, take a look at the Identity tool.

Re: Merging overlapping layers into one.

MarleneSanchez — Mon, 13 Oct 2014 20:17:14 GMT

Jake, I've tried using the tools you mentioned but the changes seem to be happening to the attributes, not the geometries. The number of polygons remains the same.

Let me try to state the question more accurately. There is one layer with many polygons (some are stacked on top of each other, some are not) that I am trying to merge into a single overlay.

Re: Merging overlapping layers into one.

JakeSkinner — Mon, 13 Oct 2014 20:20:20 GMT

Ok, you will want to perform a merge in an edit session using the Editor toolbar. See the following link:

ArcGIS Help (10.2, 10.2.1, and 10.2.2)

Re: Merging overlapping layers into one.

MarleneSanchez — Mon, 13 Oct 2014 20:58:18 GMT

Awesome. Worked as intended.Thank you!