On Sun, Feb 8, 2015 at 9:31 PM, John Abraham <j...@hbaspecto.com> wrote:
> Well I could say that using PostGIS ST_Intersects with "messy data" always > seems to give me TopologyExceptions. I've had luck with various > combinations of ST_SnapToGrid and ST_Buffer(0), but with messy data there > always seems to be some weird case that requires manually edits. Sorry to > be the bearer of bad news. Frankly, I don't understand why the GEOS > library has to throw that error. > > I would encourage you to isolate particular problems and file bug > reports. Improvements in GEOS to eliminate the underlying error(s) would > certainly be welcome. > That's pretty much what my e-mail does; it even includes a sample database to reproduce the issue. I brought it up here in case some discussion or slimming down needed/could be done before filing a bug report, and to be extra sure that it's a GEOS issue and not a PostGIS once, given the complexity of the query I'm running.
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