Questions tagged [dissolve]
To merge features based on specified attributes.
547 questions
0 votes
0 answers
47 views
How to merge two features into a single feature, when they don't overlap (yet)?
I want to merge the two areas (features) in the picture, without them resulting to be a multipart-polygon. So part of the street should be part of the final feature. I have a lot of those problems in ...
0 votes
0 answers
69 views
How to dissolve disjoint but touching features in a GeoPackage using shapefile boundaries and attribute values with OGR?
I have a GeoPackage (.gpkg) that contains multiple vector layers. Due to a previous erase-append workflow, many features in these layers are now split into disjoint parts — they were originally single ...
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0 votes
0 answers
33 views
OGR/Shapely dissolve-by-attribute on buffered polygons is merging distant features into one multipart feature
I have a GeoPackage with severallayers, and a folder of shapefiles showing boundaries that define “holes.” in gpkg. Because I filled those holes in gpkg with other features, some features that should ...
- 49
3 votes
3 answers
176 views
Dissolving on ID but keeping the minimum value of alternatives in QGIS
I have the result of a network analysis (using the QNEAT3 plugin tool 'OD Matrix from Layers to Lines (m:n)') showing the shortest paths from set points, via the network, to multiple end points. This ...
- 31
4 votes
2 answers
145 views
Control dissolved attributes in QGIS
Consider I have a layer (lines or polygons, whatever) with a table like this: TYPE LENGTH TARGET 1 10 Home 1 20 Work 2 30 Market 2 40 Work I want to ...
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0 votes
1 answer
57 views
Dissolving region crossing antimeridian
I downloaded the shape of the Chukotka region (Russia) that are on two hemisphere via overpass turbo. Here the request: [out:xml] [timeout:25]; {{geocodeArea:Чукотский автономный округ}} -> ....
- 101
2 votes
1 answer
150 views
QGIS: Merge attributes of overlapping Geometries (no delete duplicates)
I have overlapping geometries (parcels) which have the same vector information but are "duplicated" due to some attributes being different.. See in the image below 11 overlapping parcels ...
0 votes
2 answers
97 views
Why does ST_DissolvePoints give me nothing?
Why does ST_DissolvePoints give me nothing? Other people Using GDAL to get vertices of a multipolygon don't seem to have a problem. $ ogrinfo -q input_contours.csv -dialect SQLite -sql \ "SELECT ...
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3 votes
2 answers
141 views
Beyond a Merge and a Dissolve
Using ArcGIS Pro, I am trying to dissolve cemetery plots into one main region. In the attached image, you can see that each section of the cemetery has multiple plots. I would like to dissolve each ...
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1 vote
1 answer
104 views
The "Dissolve"-Tool is not working anymore [closed]
To date, I have successfully applied the "merge vector-layers" and "dissolve" tools, available in the menu under "vector", to merge polygons and thereafter to dissolve ...
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2 votes
1 answer
80 views
Unable to dissolve [duplicate]
I want to dissolve a polygon layer (land use and cover), but when i try the dissolve,to eliminate the borders for the same selection, it says geometry invalid. What should I do? Vector that I'm ...
1 vote
1 answer
62 views
Buffer and dissolve layer with GeoTools
I have layer with polyline type, while I want to buffer them and dissolve the result. In QGIS, the buffer support Dissolve cap join option like this: While with GeoTools I can only make the buffer ...
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3 votes
1 answer
87 views
Dissolving polygons within other polygons and accumulated one of their values in QGIS
I am planning a district heating system (pipe system in red). For this I need the total heat consumption of all cadastral units (in blue) next to the pipe to calculate the dimension. There are zero to ...
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0 votes
1 answer
128 views
Combine dissolve aggfunc and lambda function
I am looking to aggregate different polygons and applies analytical functions at the same time. I have tried: df.dissolve(by=['ville','arrondissement','quartier'], aggfunc={'transaction':'count','...
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1 vote
0 answers
80 views
QGIS Native Dissolve only merges polygons vertically
I have a raster which I'm trying to convert into polygons. I have managed to convert them into polygons as seen below. All these polygons only have a value of 1 attached to them. Now I want to merge ...
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