[Qgis-user] Micro-Geometry Problems

[DelazJ]

Hi,
There's also a "snap geometries to layer" Processing algorithm in QGIS that
could be worth a look.
https://docs.qgis.org/3.4/en/docs/user_manual/processing_algs/qgis/vectorgeometry.html#snap-geometries-to-layer

Regards,
Harrissou

Le mer. 15 janv. 2020 à 08:34, Hernán De Angelis <dhdeangelis at comhem.se> a
écrit :

> Steve,
>
> In my opinion this is where GRASS topological vector model shines. One
> suggestion would be to import these vectors into a GRASS location and let
> GRASS clean the polygons and fix the topology automatically during import.
> My experience with similar problems is that after the import and cleaning
> there would be few if any errors of the sort you mention. In the worst case
> any surviving error is found it could in principle be solved by deleting
> the stubborn surface and digitizing it again. It will definitely not take
> two weeks of work!
>
> Good luck!
>
> H.
>
>
> On 2020-01-14 22:51, smiller192 at cfl.rr.com wrote:
>
> All-
>
>
>
> I have digitized a land use/land cover layer as individual polygons.  The
> snap options were used and, for most vertices, the snap was precise.  A
> vertex in polygon A has a precise match to a vertex in neighboring polygon
> B.
>
>
>
> But in 582 out of 2799 polygons, there are mis-matches in adjoining
> vertices that are only evident if you zoom into the layer at a
> magnification (i.e., a scale) of from 20000:1 to 40000 to 1.  I have spent
> a couple of weeks trying to remedy these by hand using the Vertex Tool and
> other means.  My question is this: is there an automated way in QIS to
> detect and remedy these situations?
>
>
>
> Thanks,
>
> Steve Miler
>
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