All Questions
5 questions
0
votes
1
answer
73
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Summing up values of polygons within bigger polygon in QGIS
I have buildings as polygons with a lot of data in the attribute table. My goal is, to sum up the values selected for a table column of all building polygons within the building blocks (here in purple)...
- 745
4
votes
1
answer
868
views
Centroid of multiple polygons based on value in attribute table
I have a (polygon) shapefile with multiple zones. Now, I would like to calculate the centroid of groups of these zones. The zones have to be grouped based on a value in the attribute table:
AreaNr ...
- 123
2
votes
1
answer
134
views
AcrMap- How to use the dissolve tool with large amounts of polygons?
I am a college student working on an independent research project and I am trying to figure out how many points fall within a polygon.
I am examining the impacts of zoning in the Great Barrier Reef ...
2
votes
0
answers
193
views
Merge n number of adjacent polygons [closed]
I have over 17,000 individual polygons. I want to merge two adjacent polygons so that I finish with approximately 8,500 polygons. The polygons need to be merged based on location, merge two adjacent ...
- 37
5
votes
1
answer
4k
views
postgis: cluster/group points based on distance
We have a set of thousands of points and want to group all of those which are within 100m distance from each other (to get the centroid from each group). A first idea was to build 100m buffers around ...
- 441