Michael,
you won't find much support for that in GDAL itself. You'd better have a
look at Spatialite topology, PostGIS topology or GRASS topology. The
process is basically: import your geometries as a topology, do
reprojection or other work in the topology domain, and go back to the
Are there any formats that record "coverage" topology? What I'm worried
about is when shapes are encoded as blob geometry with initially identical
coordinates at shared vertices, is there any process that can validate or
record that particular coords should have the same values even after
