[postgis-users] intersection doesn't seem to intersect back w/ original geom

[Sandro Santilli]

On Tue, Jan 22, 2013 at 10:32:08AM -0500, Charlton Galvarino wrote:
> >Precision issue. What you can do is _snap_ the input lines against the
> >intersection points. Then you'll have it.
> 
> Thanks, strk.  It's a bit slower, but ST_Distance seems to be helping.  I guess it has just enough fuzziness to give me what I want.

You can also have better performance and control fuzzyness with ST_DWithin

--strk;