(Sorry for cross-posting, this is about both Gdal and PostGIS)
Hi all,
Would it be possible / make sense to add a procedure to PostGIS to
transform geometries based on control points? We now have the base
transforms: scale rotate and translate, and IMHO it would not be very
complicated to add a transform based on two sets of control points, one
for the source and one for the target projection. Code could be derived
from the gcp-based transformations in GDAL, although I have no idea how
difficult it would be to integrate those algorithms into the PostGIS
codebase. It's something I really need for my work with historical maps,
so if it is doable and fits into the PostGIS "philosophy", I could try
to find funding for it. I use the gdal routines a lot for raster maps,
and it would be really helpful to be able to do the same with vector maps.
Jan
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