Hi,
maybe this is a recurrent question but, is it possible to create polygons
with holes in postgis directly? What i want to know is, given two concentric
circles, with different radius, can postgis make directly (with no other data,
as "the inner circle is a hole or is another polygon") two polygons ( the donut
and the hole)?
I´ve got a group of closed lines, some of them inside the others ( polygons
inside polygons). I want postgis to create the areas with autodetection of
holes, etc...
Any help?
Thanks in advance,
Gus
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