Questions tagged [v.clean]

v.clean is a Grass GIS algorithm which allows the user to automatically fix topology of vector maps.

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1answer
49 views

Fixing dangles (lines) with v.clean and “fix geometries”

I need help with fixing my two dangle-errors: there are 2 dangles on the top right and one small hole on the top-left corner. I can deduct them with the Geometry Checker, but I cannot fix it (...
2
votes
2answers
101 views

How to use v.clean in QGIS to fix polygon topology

I have QGIS 3.18 Zurich with GRASS 7.8.5 installed on my 64bit Windows machine. I have digitized 1600+ polygon boundaries that now have sliver polygons, gaps, and overlaps which I've confirmed via the ...
2
votes
1answer
57 views

v.clean cleaning topology

I'm doing some tests with the v.clean but getting some results that I don't really know if I am the one doing something wrong or what. As you can see in the image bellow I created 3 features, one with ...
2
votes
1answer
45 views

Problems with cleaning the topology of a shapefile using GRASS tools and snapping tools

I have a shapefile with almost 1000 polygons (each polygon representing a farm). There are a lot of topological errors (gaps/slivers and overlaps between polygons). Below is a "zoomed in" ...
4
votes
1answer
62 views

Automatically join lines by snap

After I smoothed a layer of lines I lost the connection with some vertices. Is there an automatic way to connect the various lines to avoid doing it manually? I think the best thing is to use v....
0
votes
0answers
137 views

V.Clean is not giving output In QGIS 3.14 Pi

I was trying to clean by removing sliver lines between set of polygons in my KML file. But unfortunately I am getting following error: QGIS version: 3.14.15-Pi QGIS code revision: d5114d2cfa Qt ...
3
votes
1answer
72 views

v.clean is stuck at 0%

So I have a layer with thousands of gaps and overlaps that I want to tidy up, but when I go to run v.clean in order to do so, it just sits there at 0%. I have no warnings or errors in the system, and ...
0
votes
1answer
79 views

R: read and clean layer with v.clean (using rgrass7)

I'm trying to execute some rgrass7 processing from R but I can't even get the first process done. I would like to clean a vector line layer. The goal here is not just to clean the topology, that's ...