[GRASS-user] Checking if a point (X, Y) is inside the polygons of a shape file using command line

[John C. Tull]

Corrado,

You can do this with v.select:

v.select ainput=input_points binput=input_polygon out=output_points

Cheers,
John

On Mar 3, 2008, at 8:02 AM, Corrado wrote:
> Dear friends,
>
> I have a shape file, with some polygons. (I have imported it as  
> vector layer.)
>
> I have a point, expressed as X,Y coordinates (Easting,Northing).
>
> I want to know if the point is inside any of the polygons in the  
> shape file.
>
> Is there a command I can use?
>
> I would rather use command line,  because I have many points,  
> really.  I would
> like to find a way to do it from the command line, so that I can  
> write a
> routine to extract each point and check if it is inside the polygons.
>
> I can rephrase the question, if it is not clear.
>
> I am not very experienced with Grass but would like to substitute  
> ArcGIS, that
> we are using now.
>
> Best regards
> -- 
> Corrado Topi
>
> Global Climate Change & Biodiversity Indicators
> Area 18,Department of Biology
> University of York, York, YO10 5YW, UK
> Phone: + 44 (0) 1904 328645, E-mail: ct529 at york.ac.uk
> _______________________________________________
> grass-user mailing list
> grass-user at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/grass-user