[Qgis-user] conditional dissolve

[Pedro Tarroso]

Hi

I would create a new field in the attribute table to be filled with the condition. I believe the simplest way is to use a dbf editor (like openoffice spreadsheet or old versions of excel) to create the condition field (same code for shapes to be dissolved). Then I would use the Dissolve tool from fTools plugin on that field. 

Hope that it helps.

Boa sorte,
Pedro

-----Original Message-----
From: qgis-user-bounces at lists.osgeo.org on behalf of A. Marcia BARBOSA
Sent: Mon 5/24/2010 2:30 PM
To: qgis-user at lists.osgeo.org; grassuser
Subject: [Qgis-user] conditional dissolve
 
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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