[GRASS-user] grass gis equivalent of st_subdivide

Markus Neteler neteler at osgeo.org
Wed Oct 13 21:19:45 PDT 2021


Moritz Lennert <mlennert at club.worldonline.be> schrieb am Do., 14. Okt.
2021, 02:28:

> Hi HB,
> Le 13 octobre 2021 22:57:21 GMT+01:00, B H <hemantbist at gmail.com> a
> écrit :
> >Hi,
> >How do I divide an area into smaller areas ( I am looking for
> functionality
> >of st_subdivide in postgis).
> >I need to  split some big areas into smaller ones (and all smaller ones
> >should have the same attributes).
> >I understand that it means that underlying topology would change( It would
> >add more boundaries).
> >
> >When v.in.ogr imports a shapefile in Grass GIS, it automatically splits
> the
> >overlapping areas to make them topologically correct, so I am hoping that
> >there is already some way to just split a topologically valid area as
> >well...
> I don't think that there is any readymade module for this. You could just
> create a fixed grid with v.mkgrid and v.overlay it with something like this:
> v.overlay ain=orig bin=grid out=subdivided operator=and olayer=0,1,0

Another option to try may be this one:


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