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PostGIS: Custom projection matrix from known points
I have a PNG image of a map (mercator) and known points in a table like this:
coord_map - geometry(Point, 0)
coord_real - geometry(Point, 4326)
010100000000000000000000000000000000000000 (0,0)
...
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Using ST_Affine() and trans_param() functions on vector layer
After reading this post How to georeference a vector layer with control points? I decided to give it a try to move/rotation/scale a polygon using Postgis.
I have two polygons, polygon_from and ...
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