[Qgis-user] Intersect Performance

[Bjorn Nyberg]

Hi,
They are both in the same source.
Cheers,
Bjorn


On Sep 10, 2013, at 19:01 PM, bjorn.burr.nyberg at gmail.com wrote:

> Hi,
> I am trying to intersect a line with a polygon however it is extremely slow
> in QGIS (note i need intersect to save attributes rather than CLIP) taking
> 15mins compared to 30seconds in ArcGIS9.3 so I was wondering if anyone had
> any recommendations or experienced similar slowdowns? I may need to add a
> spatial index? - although how do i do this within a sequence of processes
> defined in either a model or a script?
> 
> I've heard that GRASS Overlay may be quicker but unfortunately
> sextante(processing) does not accept "atype" to be a line although I think
> it should be possible if i read the docs correctly at
> http://grass.osgeo.org/grass64/manuals/v.overlay.html?
> 
> Cheers,
> Bjorn
> 
> 
> 
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