Mercurial > gemma
comparison 3rdpartylibs.sh @ 2425:4c16f5ad1905
Make area generation more robust
Valid geometries can become invalid geometries during transformation
e.g. due to very small 'minimum clearance' (see PostGIS docs) and
numerical inaccuracy of the transformation. Thus, try to repair
polygons of the input area after transformation and calculate
the union of the result polygons before transformation to avoid
'TopologyException' in the union operations.
The simulated waterway area of the changed axis in the test data
is affected here, but real waterway area data with complex shore
lines could likely be affected, too.
author | Tom Gottfried <tom@intevation.de> |
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date | Thu, 28 Feb 2019 16:36:49 +0100 |
parents | 251ee25accce |
children | 86173ac7f222 |
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2424:b6deb03ef13f | 2425:4c16f5ad1905 |
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