I have an unusual problem I was wondering if there is way for PostGIS to
solve for me.
I have squares. A lot of squares. Thousands of squares. I would love
to combine them into one or more larger polygons. But, they must valid
polygons, non-reentrant. For example. if you have a 3x3 grid of squares,
ABC
RST
XYZ
and I want to combine all but the center, I would need either 2 polygons
(something like ABC and RXYZT), or one polygon with an inner ring.
Does this make sense? Anyone done something like this, with or without
PostGIS?
- Brian
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