[postgis-users] Data cleaning options

[Michael Welter]

I get a few "Self-intersection" and "Ring Self-intersection" on my 
polygons as well.  What does this mean?



Tim Keitt wrote:
> Hi All,
> 
> I have a large collection of rather malformed polygons in postgis and
> need to clean them somehow. Running isvalid() on the geometry column
> gives many "Ring self-intersection" errors, some "Interior is
> disconnected" errors and the always enjoyable "Too few points in
> geometry component" error. What options are there for
> cleaning/correcting polygons?
> 
> THK
>