[postgis-devel] (no subject)

[Markus Schaber]

Hi, Strk,

strk at refractions.net wrote:

> This can already be done with all postgis releases
> using buffer(collect(the_geom),0);

Did you notice that this does only work for polygonal geometries, not
for points, lines and mixed geometries?

geonames=# select asText(buffer('POINT(0 0)',0));
          astext
--------------------------
 GEOMETRYCOLLECTION EMPTY
(1 row)

geonames=# select asText(buffer('LINESTRING(0 0,1 1)',0));
          astext
--------------------------
 GEOMETRYCOLLECTION EMPTY
(1 row)

Markus