Hi Boris,
You could try the old buffer by zero trick if its self-intersections you are
having a problem with.
Phil
From: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of Kirk
Schmidt
Sent: 09 May 2018 13:45
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Problem
Hi Boris:
You can use the grass modules under processing toolbox>Grass GIS 7
commands>Vector>v.build.check or v.clean to isolate the problem.
Typically it is a polygons with and intersecting sliver that creates the
problem.
Kirk
On 5/9/2018 9:35 AM, boris diaz wrote:
Hi there, I´m trying
Hi there, I´m trying to cut a raster with a polygon mask in qgis 2.18
The validation tool produces a draw with the message "valid output", but
the topology tool finds a "non valid geometry" in the id objetc 0. The
shape has only one object, an irregular polygon representing a watershed.
SO the
