Paul Ramsey
Paul Ramsey
Can you confirm what GEOS version this is?
@rcoup thoughts?
I think opening up a couple new child tickets to this one (port VW, fix DP for this case) and closing off this would would make sense.
Going to need a fix as well as a ticket, as we do not have iOS environments here.
Thanks for starting to think about this. The core functionality of coverage building and simplification is still on the drawing board, to it's a little early to set any kind...
For big results in general, if you don't do a bunch of FETCH calls you'll end up with the whole result set sent to the client and then iterated on,...
Well, observing and fixing an overflow... I never did replicate the reported condition.
Confirmed, still in PostGIS, but probably in GEOS? Will push this into a unit test to see. Slightly smaller example SQL: ``` SELECT ST_Length(A), ST_Length(ST_DIFFERENCE(A,A)) AS DIFF FROM ( SELECT...
Well, [pulling that test back](https://github.com/pramsey/geos/tree/main-gh667) into GEOS, I'm seeing nothing. No instability over multiple calls. It's very odd indeed. Also no particularly strange usage patterns in PostGIS that might lead...
Continuing with the investigation, on the https://github.com/pramsey/geos/tree/main-gh667 branch, there is now a [test](https://github.com/pramsey/geos/blob/810bd92f9db1fd89292ea22d4711695528232775/tests/unit/simplify/TopologyPreservingSimplifierTest.cpp#L594-L602) in TopologyPreservingSimplifierTest.cpp that generates differing outputs from the same input. ```c++ for (std::size_t i = 0; i...