How do I combine multiple polygons in the same shapefile?

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05-13-2013 01:19 PM
JohnNovi
New Contributor II
I have a shapefile for LA county with all the cities in it but the cities are comprised of multiple polygons.  I want to combine all the polygons for each city into a single polygon for each city in the same shapefile and I can't figure out how to do that.
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4 Replies
JohnNovi
New Contributor II
I used dissolve and it worked
jeffmcleroy
New Contributor
You can also go to the Editor drop down and click merge
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SabrinaKlein
New Contributor
Hey all,
   What if I have a layer, say slope that one of the slope values has been converted into a polygon file. That file has thousands of fields of separate polygons. Dissolve crashes the computer.

Anyone have another alternative?

Much thanks,
Elvenlotus
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Zeke
by
Regular Contributor III
Dissolve it in parts, then dissolve the parts together.