#1034: Union topology exceptions lead to complete loss of floating point
precision
-------------------------+---------------------------
Reporter: dannytoone | Owner: geos-devel@…
Type: defect | Status: new
Priority: major | Milestone: 3.9.0
Component: Default | Version: 3.8.0
Severity: Significant | Resolution:
Keywords: |
-------------------------+---------------------------
Comment (by dannytoone):
Just gave it a runthrough on my dataset, and with the exception of a stack
overflow error (fixed by increasing the stack size through `-Xss`), it ran
flawlessly. I fully expected to see a bunch of exceptions, but it handled
them all really well. Visually I can't find any flaws in the result.
The operation was basically a process to flatten a bunch of geometries
using a process similar to this: http://blog.cleverelephant.ca/2019/07
/postgis-overlays.html
My full dataset is probably too big to post here, but here I'll try to
attach a photo of the resulting geometries to get an idea at what I was
throwing at it.
Not sure if it would be useful to find a way to get you this dataset for
exploring the behavior around topology exceptions that are handled
internally. I know for a fact that this same dataset will reproduce the
error linked above in the postgis tracker.
--
Ticket URL: <https://trac.osgeo.org/geos/ticket/1034#comment:4>
GEOS <http://trac.osgeo.org/geos>
GEOS (Geometry Engine - Open Source) is a C++ port of the Java Topology Suite
(JTS).
_______________________________________________
geos-devel mailing list
geos-devel@lists.osgeo.org
https://lists.osgeo.org/mailman/listinfo/geos-devel
