Hi,
since QGIS 3.36 there is an new processing algorithm "coveragesimplify"
(->
https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/qgis/vectorcoverage.html#qgiscoveragesimplify)
where no edges will cross or touch after the simplification...it
requires version of GEOS >= 3.12
Best regards
Stefan
Am 18.03.2025 um 10:23 schrieb celati Laurent via QGIS-User:
Dear all,
I performed a raster segmentation from a Spot6 satellite image with
OTB. I polygonized/vectorized this raster segmentation in order to get
a vector file. To limit the pixelation of this cover, I was thinking
of smoothing the layer with the QGIS tool. This works, but the problem
is that it generates topology/geometry issues (overlap, holes, etc.).
And I can't afford to have invalid geometries. Could you share some
advices? Guidances in order to skip those problems? I've attached a
screenshot of the smoothed vector segmentation.
Thanks so much.
image.png
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--
Mit freundlichen Grüßen
Stefan Giese
Projektleiter/Consultant
---------------------------------------------
FOSSGIS Konferenz 2025 in Münster
26.-29. März 2025
https://www.fossgis.de/konferenz/
---------------------------------------------
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79100 Freiburg
Germany
Tel.: +49 (0)761 / 519 102 - 61
Fax: +49 (0)761 / 519 102 - 11
stefan.gi...@wheregroup.com
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