On Tue, Mar 13, 2018 at 1:05 PM, Ken Mankoff <mank...@gmail.com> wrote:
> > > On Tue, Mar 13, 2018 at 12:21 PM, Helmut Kudrnovsky <hel...@web.de> wrote: > >> Ken Mankoff wrote >> > Is there a way to take an arbitrary vector from >> > GRASS and apply an arbitrary transformation to each element? v.edit has >> a >> > move feature, but this is not what I want. >> > >> >> v.transform - Performs an affine transformation (shift, scale and rotate) >> on >> vector map. >> https://grass.osgeo.org/grass74/manuals/v.transform.html >> >> not sure it is what you're looking for. >> > > Yes that would do it just fine. Unfortunately I'm not sure how to get the > transformation matrix that invproj uses. I'll try to figure this out... > > Actually this does not work because I'm in EPSG:4326 (lon,lat) location and there are scaling issues. I think I need to access proj directly for all vertices... -k.
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