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[sumo-user] Scale-Dependent Edge Formation in netconvert with Different Bounding Boxes
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- From: Manohara C V <manohara.cv@xxxxxxxxxxxxxxxxxxx>
- Date: Tue, 12 Aug 2025 14:22:21 +0000
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- Thread-topic: Scale-Dependent Edge Formation in netconvert with Different Bounding Boxes
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Dear SUMO Team,
I am experiencing inconsistent network topology generation when using netconvert with OSM data across different bounding box sizes. The same roads produce different edge structures depending on the area size.
Problem:
Test Bounding Boxes (osmget.py):
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large area - '77.288818359375,12.769113855469314,77.74200439453125,13.149194131932646'
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small area - '77.56663933167825,13.005436732714667,77.56823663763048,13.005741560926017'
Issues like :- edge id "36777680#0" having forming differently
Current netconvert command:
netconvert \
--osm-files input.osm \
--ramps.guess \
--junctions.join \
--junctions.scurve-stretch 1.0 \
--tls.guess-signals \
--tls.join \
--tls.uncontrolled-within \
--geometry.remove \
--output.street-names \
--output.original-names \
--keep-edges.by-vclass passenger \
-t typemap.xml \
--output-file output.net.xml
Attempted Solutions (all failed):
-
Disabled all heuristics:
--geometry.remove false --junctions.join false --ramps.guess false -
Used fixed thresholds:
--junctions.join-dist 10 -
Removed typemap completely
-
Added
--roundabouts.guess false and --edges.join false
Question: Why does netconvert produce different edge topologies for the same OSM roads when the bounding box size changes? Is there a scale-dependent algorithm that can be disabled to ensure consistent edge formation regardless of network area?
Expected Behavior: Identical road topology regardless of bounding box size - same OSM ways should always produce the same SUMO edge structure.
Environment:
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SUMO Version: 1.23.1
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OS: windows
-
Data Source: OpenStreetMap
Thank you for your assistance.
Best regards,
Manohar
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