[postgis-devel] Testing on Windows PostGIS 1RC1

strk strk at keybit.net
Wed Sep 22 16:24:43 PDT 2010


On Thu, Sep 23, 2010 at 12:18:37AM +0200, Nicklas Avén wrote:

> select st_snaptogrid('LINESTRING(1 2, 1 2)'::geometry, 0.1)
> 
> So we don't get a parse error or an empty geometry, but... nothing
> 
> Maybe empty geometry would be better?

FWIW, that's an invalid geometry.
ST_MakeValid would make it a POINT.

But yes, SnapToGrid turns collapsed geomeries into NULLs,
intentionally, as it was designed as a vector reduction tool.

Dunno what would an empty give you more than the current NULL.
Possibly a POINT would help you more.

--strk;

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