[postgis-users] "non intersecting node" error when using st_node ?!

[Mathias Versichele]

Hi all,

I've been struggling with "non intersecting node" issues when trying to run
st_node, which seems weird to me as st_node is supposed to fix these issues
in the first place, right ?

The following table dump illustrates the problem: https://we.tl/d3WwOv2AFv

When running the following query:

select st_node(st_collect(geom)) from input_geoms;

I get the following error:

ERROR:  GEOSUnaryUnion: TopologyException: found non-noded intersection
between LINESTRING (1.0708e+06 786844, 1.07094e+06 786875) and LINESTRING
(1.07097e+06 786883, 1.0708e+06 786844) at 1070922.7377618756
786871.60839152802

The input geoms are already snapped to 10meters precision.

Help very much appreciated on how to fix this issue.


-- 
Mathias Versichele
Oudburgstraat 16
9240 Zele
0485/16.07.08
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