[GRASS-user] Clipping shapefiles

[Matthew Huck]

Well after about  27 hours on an imac it work ed, the command for  
v.overlay was
v.overlay ainput=S28 atype=line  binput=cutter output=S28_Clipped  
operator=and

Unfortunatly I have about few hundred to do!  If I can't make it any  
faster, might have to look at using the amazon compute cloud to do  
this in a reasonable time! Don't really want to do that though!

Cheers

Matthew


On 14/09/2008, at 6:08 AM, Craig Leat wrote:

> Hamish wrote:
>>>> g.region vect=NZMG_s27
>>>> v.in.region output=cutter type=line --overwrite
>>>> v.overlay ainput=wellington_contours atype=line \
>>>>   binput=cutter output=clipped operator=and
>>
>> and I think you'll want v.in.region to use type=area, not line,  
>> otherwise
>> you risk only to get contour lines which cross the boundary and not  
>> those
>> that fall within it.
>
> The manual [1] for v.overlay states that btype must be area. Shouldn't
> v.overlay complain if you try to use a line type?
>
> Craig
>
> [1] http://grass.itc.it/grass64/manuals/html64_user/v.overlay.html
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