[postgis-devel] Topology question about CreateTopology

strk strk at keybit.net
Tue Dec 28 07:42:43 PST 2010


On Tue, Dec 28, 2010 at 07:33:21AM -0500, Paragon Corporation wrote:
> Strk,
> 
> I noticed that if I don't pass in a tolerance when creating a topology, it
> defaults to -1.  I would have expected 0.  Is that intentional?

No, sounds like a bug.
No function is actually using a tolerance yet, so not a big deal,
but worth filing a bug about it.

The ST_Snap function _might_ be something to look at for implementing
the tolerance support.

> Actually srid should default to 0 too for PostGIS 2.0 and looks like you are
> defaulting that to -1 as well.

Please file a (separate) ticket for this as well.
TIA

--strk;

  ()   Free GIS & Flash consultant/developer
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