Yes. ST_Collect your Linestrings together and pass them to
ST_BuildArea(). The return type can be a Polygon, MultiPolygon, or NULL
(if input linework does not form polygons). You may want to use
ST_Dump() to convert a MultiPolygon result into a set of Polygons.
-- Kevin
Gustavo Ces wrote:
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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