[Qgis-user] conditional dissolve

[Carson Farmer]

What about Vector > Geoprocessing tools > Dissolve
With this tool, you are able to process 'only selected features',
which could be done ahead of time for the countries you wish to
dissolve further.
This is a Python tool, so for extremely large datasets it might be a bit slow...

Carson

On Mon, May 24, 2010 at 2:30 PM, A. Marcia BARBOSA
<anamarciabarbosa at gmail.com> wrote:
> Hi,
>
> I'm using the shapefile of the GADM database of Global Administrative
> Areas (http://www.gadm.org), but the subdivisions of some countries
> (such as Spain, Slovenia and others) are too small. In order to get
> divisions that are more evenly sized among all countries, I need to
> dissolve sub-regions to regions, but only within some of the
> countries. Is there a way to use a "conditional dissolve" on only some
> selected countries?
>
> Cheers
> Márcia
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-- 
Carson J. Q. Farmer
ISSP Doctoral Fellow
National Centre for Geocomputation
National University of Ireland, Maynooth,
http://www.carsonfarmer.com/