On Fri, Feb 9, 2018 at 6:19 PM, Paolo Cavallini <[email protected]> wrote: > > Hi all, > v.generalize is failing to simplify some of my geometries when in > EPSG:3857. Same geoms in EPSG:3003 were simplified correctly. > Incorrect borders were reported, unclear to me why. > All the best, and thanks for any hint.
This seems to be a reprojection problem. If you reprojected the vector data in GRASS with v.in.ogr + v.proj, this is a problem of GRASS, granted that v.in.ogr did not complain about vector topology. If you reprojected non-topological polygons, this is a common problem when reprojecting non-topological polygons. Please import these polygons first into GRASS, then reproject within GRASS and run v.generalize on the reprojected GRASS vector. HTH, Markus M
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