All Questions
7 questions with no upvoted or accepted answers
3
votes
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answers
364
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Dealing with bridges over roads in PostGIS topology?
first time posting please ask for more details if not enough provided.
I am using OSM road data and have created postgres topology for them. I am now cleaning up the data before exporting it for ...
- 31
2
votes
0
answers
1k
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Topology Network in PostGIS database
I'm returning to the same question all over again. I'm dealing with electrical network and I'd like to build topology for all network lines in database so I can construct nodes and edges dynamicly for ...
- 571
1
vote
0
answers
233
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Split intersections of lines considering bridges and tunnels
I want to make a road network routable. I already have a road shapefile, but there are many intersections of lines that I want to split. Now I have two problems:
(1) My first approach to split them ...
- 179
1
vote
0
answers
799
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Removing pseudo-nodes using QGIS Sextante plugin?
I have a road network (vector) that i'm interested in carrying out some space syntax analysis on.
Predictably my GIS data is in a pretty terrible state. For example, there are a bunch of roads on the ...
- 559
0
votes
0
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29
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Extract a hierarchical topology from stream network
A typical stream network has a hierarchical topology that resembles a cladogram (phylogenetic tree). There are many software tools that have been developed to analyze variables along a cladogram, ...
- 9
0
votes
1
answer
71
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Node information in a PostGIS dataset
I am working in QGIS / PostGIS to plan the cable layout for a seismic array. The power distribution is from the green point with the white cross in the middle. The nine green points marked with a ...
- 3,836
0
votes
1
answer
57
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ArcGIS Pro - routing, remove short network elements and reconnect edges
I am setting up an ArcGIS Pro network for use in Network Analyst. So far things work pretty well, depart from some 1600 errors due to this kind of problem: "
SourceName: linknetz, ObjectID: ...
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