[UW-GIS-L] Aggregating small spatial units in ArcGIS

[Adam Freeburg]

Hi Julie,
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

>

>  Julie Knoll Rajaratnam, PhD

> Research Scientist

> Institute for Health Metrics and Evaluation

>

> Phone: 206-897-2831

> Email: jrajarat at u.washington.edu

>

>

>

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>

>



-- 

Adam Freeburg
Department of Anthropology
University of Washington
Box 353100
Seattle, WA 98195
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