Linked Questions
29 questions linked to/from Fixing geometry validity errors in QGIS 2
12
votes
1
answer
27k
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Repairing geometry using QGIS? [duplicate]
I have shapefile with few polygons. Some of them are self-intersecting. In ArcMap I can use "Repair geometry" tool, and it works well. But problem is, that for that task some users need to use open ...
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2
votes
1
answer
141
views
Intersecting to vector layers when there is no common attribute [duplicate]
I am trying to join two vector layers into one, the first is a road noise barrier shapefile, the second is a vectorised DEM.
The road barriers have a relative height attribute for each section of ...
- 327
0
votes
0
answers
102
views
Is there a tool that is similar to the ArcGIS repair geometry tool in QGIS? [duplicate]
I need a tool in QGIS that has the same functionality as the repair geometry tool (native of ArcGIS).
- 1,980
0
votes
0
answers
49
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Repairing geometry using QGIS [duplicate]
I'm looking for a roughly equivalent tool in QGIS to the Repair Geometry Tool in ArcGIS Desktop. When I run some common vector processing tools in QGIS, I occasionally run into invalid geometry errors ...
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9
votes
7
answers
25k
views
Fixing corrupt shapefile?
I have a shapefile that I was working on in ArcGIS Desktop 9.3 get corrupted somehow and it gives me the error "Number of shapes does not match the number of table records.". What I would want is to ...
- 871
12
votes
4
answers
39k
views
QGIS: "Invalid geometry" even after using validity checker and v.clean
I'm trying to intersect two layers in QGIS, similar to this unanswered question. I've performed Vector > Geometry Tools > Check Geometry Validity and I've run GRASS's v.clean, per these questions.
I'...
- 123
7
votes
2
answers
8k
views
How to to validate geometries using ogr2ogr
I have been trying to dissolve a shapefile with more than 38000 rows. I used query as follows
ogr2ogr -f "ESRI Shapefile" dissolved.shp Barangays.shp -dialect sqlite -sql "select ST_union(Geometry),* ...
- 198
1
vote
2
answers
5k
views
Add ring and Fill Ring error: could not add ring since the inserted Ring is not contained in a feature
I'm new to QGIS and am struggling a bit,
I'm using the 2.18 version on a Mac OSX Yosemite.
I'm trying to add a ring to create a geological map, I was successful for most of the map, but suddenly it ...
4
votes
2
answers
4k
views
Cleaning polygon after using dissolve to repair geometry in QGIS?
I'm trying to obtain the boundaries of shapefile, thus to clean the inside as a matter of speaking. While I had expected that dissolve while get me a proper polygon, unfortunately it still has some ...
- 773
4
votes
1
answer
3k
views
QGIS: Feature passes ‘Check validity’ but ‘Fix geometries’ has an issue - where to start?
I think I have a problem in understanding how the ‘Identify Features’ tool works in QGIS with a shapefile that might have some kind of error. I don’t know quite enough QGIS to be sure I’m asking this ...
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1
vote
1
answer
3k
views
Overlap of raster over a vector in QGIS
I have a single band raster image with values of pixel 0 and 1. There's another line vector layer over the same area. I need to find the percentage of line which is overlapped by the pixels of value 1....
- 319
3
votes
1
answer
2k
views
How do I find the percent overlap between two shapefiles in QGIS?
I have two different shapefiles (first and second). I want to calculate how much overlap there is between the liquefaction zones in the second shapefile and each of the neighborhoods in the first.
I'...
- 255
3
votes
2
answers
459
views
QGIS Spatial query error
I have a layer of a csv file with around 700k rows and a polygon layer, both are in wgs84.
I'm trying with the spatial query to calculate what point are in the polygons.
The problem is that the ...
- 611
3
votes
2
answers
797
views
Spatial query that doesn't seem to work
I have QGIS 2.8.2 Wien on windows 7 and quite new to QGIS. I have two shapefiles - 1 with rivers and 2 with sites located on some of those rivers. I want to carry out a spatial query to find the river ...
- 39
3
votes
2
answers
591
views
Calculating polygon area fail — QGIS
I'm trying to calculate the area of US congressional districts (shapefiles from here). I have eight different district shapefiles. I can calculate areas perfectly for the first five shapefiles (...
- 75