[Qgis-user] Overlay request

[Alex Mandel]

Jacolin Yves wrote:
> Le Tuesday 08 September 2009 10:58:57 Jacolin Yves, vous avez écrit :
>> Hello,
>>
>> Is it possible to do an overlay request on two layers in QGIS?
>>
>> I would like to get a new layer showing features of layer A overlaying
>> features of layer B.
>>
>> thanks,
>>
>> Y.
> 
> One information: my layers are not in a postgis layer and I would like to 
> avoid to import them (yes I am lazy :p )
> 
> Does fTools will add such feature?
> 
> Y.

Yes Clip should do what you want, it can also be achieved via an
intersect, although that will merge the attribute tables in the overlap
and possibly cut polygons.

I wrote a modification to the old geoprocessing tool called an extract
which is very similar but is a select by overlap instead of a cut. It's
very similar to v.extract in grass. I can post if that's what you need
and maybe we can get Carson to add it to ftools.

Alex