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Questions tagged [slivers]

Questions related to identifying or removing polygon slivers.

11 questions with no upvoted or accepted answers
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3
votes
2answers
127 views

Automatically fill gaps and merge freshly generated polygons with the longest adjacent polygon

I get polylines automatically generated from AutoCAD from a colleague. Converting them into polygons with QGIS 3.6, I find out some sliver polygons and gaps in between, as shown in the picture below : ...
3
votes
1answer
609 views

Using Check Geometries plugin for polygons in QGIS?

I've a few hundred polygon features with many duplicate nodes, gaps, overlaps and other geometry errors. Fixing all errors seems to be quite tricky. I had to run the duplicate nodes check twice to fix ...
2
votes
0answers
124 views

Removing slivers from IPolygon using ArcObjects?

ArcGIS Desktop Basic 10.1 with Spatial Analyst and 3D Analyst I have multiple neighboring polygons which I unionize. On occasion the result has slivers where the multiple polygons meet. I have been ...
2
votes
0answers
172 views

How to avoid slivers when merging (union) two shapefiles in QGIS?

Here's the kind of tool I want: Preference A: Union the two polygon shapefiles that where the wetland file takes precedence over the forest file when the distance between the edges is less than 20m. ...
2
votes
0answers
630 views

Eliminate sliver polygons, not the enclaves

I would like to use the 'Eliminate sliver polygons' in QGIS, but only if they have the same attributes. To be more specific, I have an administrative shapefile that was created with the SEXTANTE tool ...
1
vote
0answers
40 views

Fixing Topology (Gaps and Overlaps) in QGIS

I am digitizing a new polygon shapefile of property boundaries based on orthoimagery using QGIS Zanzibar. I'm acquainted with topology editing in ArcMap using geodatabases. I did so with snapping to ...
1
vote
0answers
48 views

Reoccurring multipart / slivers / topology errors using file geodatabase?

Recently I had to hand in a FGDB to state authorities. I did all topology checks and corrections as defined in their specifications (see list below). My collegue did a cross check on a the same FGDB. ...
1
vote
0answers
58 views

Tracking administrative changes with QGIS

I use QGIS. I have two shapefiles with the administrative boundaries in two differnet years. These boundaries have changed: some wards (smallest administrative area) remain the same, some are newly ...
0
votes
0answers
22 views

Union Tool creating slivers in ArcGIS Desktop?

I am using ArcGIS Desktop 10.4. I have 2 feature classes in the same GDB. One feature class is a subset of the other one (i.e. it's a direct copy, with a subset of features retained, the others ...
0
votes
0answers
82 views

Improving performance of Eliminate tool in ArcGIS Pro?

My data is very large (polygon feature class with 884187 features), thats why Python geoprocessing tools (which use geoprocesses like Intersect, Buffer etc.) don't work due to performance issues. So ...
0
votes
0answers
50 views

Removing Polygons Within Polygons After Merge (QGIS 2.18 OS X)

I've merged together a polygonized raster layer of a certain elevation grade (>25%) and a wetlands buffer. I can't seem to find a good solution to the problem at hand, however. Ultimately I'd like to ...