[postgis-users] simplify weirdnesses

[David Blasby]

Markus Schaber wrote:

> Is it desired that a PostGIS operation on valid geometries can make them
> non-valid?

The simplify() function was a user-contributed function - its not part 
of the postgis core.  It has known problems due to topological collapses 
in the D-P algorithm.

If you want to contribute code that simplifies without causing any 
topological collapses, we can put that in instead.

dave