[Qgis-user] Attributes when using Dissolve on a polygon layer

[Giovanni Manghi]

Hi,

actually you can, using the "merge selected features" or the "merge
attributes of selected features" in the "advanced digitize" toolbar, but
I agree that it would be better to have it also in the "dissolve" tool,
because selecting features (when a dissolve is needed) in large datasets
is not always starightforward.

It may exist already a ticket filed about this issue, you can check the
tracker and eventually open it. Please consider also supporting the
development of such feature.


Cheers

-- Giovanni --


On Sat, 2011-10-15 at 01:56 -0700, magerlin wrote:
> In Qgis you can dissolve a polygon layer by the Geoprocessing tools.
> 
> But as far as I can see you can not control what happens to the attribute
> data?
> 
> It would be nice to have the possibility to select how attributes are
> handled like in "Join attributes by location":
> 
> * Just get atributes from the first record
> * Get a summary: Mean, min, max, sum or median of records
> 
> This would be usefull for jobs like summing up population numbers in
> municipalities to get the population in counties (given you've got both
> county and municipality ID's in the shapefile). 
> 
> Or is there an easyer way to do jobs like this?
> 
> -----
> Regards Morten
> (Qgis 1.7 and Win 7)
> --
> View this message in context: http://osgeo-org.1803224.n2.nabble.com/Attributes-when-using-Dissolve-on-a-polygon-layer-tp6895123p6895123.html
> Sent from the qgis-user mailing list archive at Nabble.com.
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