[UW-GIS-L] Aggregating small spatial units in ArcGIS
freebs at u.washington.edu
Fri Oct 17 01:26:10 PDT 2008
Search for "Dissolve" in the toolbox. I think this is what you want.
On Fri, Oct 17, 2008 at 12:21 AM, Julie K. Rajaratnam <
jrajarat at u.washington.edu> wrote:
> Hi there,
> I'm a novice user of ArcGIS and mainly use it to create maps with regions
> shaded to different values of health outcomes. Very basic.
> Here's my problem:
> I have a map of Mexican municipalities, but I want to create a basemap with
> jurisdiction-level units.
> Municipality units are smaller than jurisdictions, so within each
> jurisdiction might be up to 10 or so municipalities. I have a file that
> gives me the jurisdiction number of each municipality, and I have added that
> data to my shapefile.
> Now I want to tell GIS to essentially remove the boundaries within each
> jurisdiction (create new polygons for juridictions, aggregating the
> municipality-level polygons within each one).
> This has to be pretty simple…
> Thanks for any ideas,
> Julie Knoll Rajaratnam, PhD
> Research Scientist
> Institute for Health Metrics and Evaluation
> Phone: 206-897-2831
> Email: jrajarat at u.washington.edu
> Uw-gis-l mailing list
> Uw-gis-l at u.washington.edu
Department of Anthropology
University of Washington
Seattle, WA 98195
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