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Re: [sumo-user] Duarouter no connection for vehicles only.
It's not uncommon for OSM networks to have some disconnected parts. Since some of these roads (i.e. highway.service) are not accessible to cars by default but are valid start and and location for random person trips, this would easily fit with your observations.
Possible remedies:
- set randomTrips.py option --validate (this automatically filters out invalid trips but you may have to upscale requested traffic to compensate).
- re-process the network with option --keep-edges.components 1 to enforce weak connectivity
- hunt for connectivity issues and fix them on a case-by-case basis: https://sumo.dlr.de/docs/sumo-gui.html#check_connected_components

Am Fr., 7. Feb. 2025 um 19:26 Uhr schrieb thomas.holland8--- via sumo-user <sumo-user@xxxxxxxxxxx>:
These are my calls as from the terminal:

RandomTrips: 

calling python "C:\Program Files (x86)\Eclipse\Sumo/tools/randomTrips.py" --net-file "C:\Users\thoma\Sumo\mplsb\osm.net.xml.gz" --additional-files "C:\Users\thoma\Sumo\mplsb\mpls.add.xml" --output-trip-file "C:\Users\thoma\Sumo\mplsb\mpls.trips.xml" --route-file "C:\Users\thoma\Sumo\mplsb\mpls.rou.xml" --persontrips --persontrip.transfer.car-walk "ptStops, allJunctions" --persontrip.walkfactor "0.1" --trip-attributes "modes=\"car\"" --speed-exponent "-4" --min-distance "200" --verbose --insertion-rate "16000" 

Duarouter: 

calling C:\Program Files (x86)\Eclipse\Sumo\bin\duarouter.exe -n C:\Users\thoma\Sumo\mplsb\osm.net.xml.gz -r C:\Users\thoma\Sumo\mplsb\mpls.trips.xml --ignore-errors --begin 0 --end 3600 --alternatives-output NUL --no-step-log --additional-files C:\Users\thoma\Sumo\mplsb\mpls.add.xml --persontrip.transfer.car-walk ptStops, allJunctions --persontrip.walkfactor 0.1 -v -o C:\Users\thoma\Sumo\mplsb\mpls.rou.xml

Here is a sample of the error message: 

Warning: No connection between edge '1201757182' and edge '1341833947#1' found.
Warning: No route for trip in person '5'.
Warning: No connection between edge '1202040111' and edge '230400129#0' found.
Warning: No route for trip in person '8'.
Warning: No connection between edge '1293493663' and edge '1202040064' found.
Warning: No route for trip in person '42'.

My network should have good connections for cars seeing as vehicle trips work. I have been using the documentation and did not find anything dedicated to creating intermodal randomtrips beyond using the option --persontrips and specifying modes in the trip attributes, which I am doing. 

From: sumo-user <sumo-user-bounces@xxxxxxxxxxx> on behalf of Mirko Barthauer via sumo-user <sumo-user@xxxxxxxxxxx>
Sent: Friday, February 7, 2025 2:40 AM
To: Sumo project User discussions <sumo-user@xxxxxxxxxxx>
Cc: Mirko Barthauer <m.barthauer@xxxxxxxxxxx>
Subject: Re: [sumo-user] Duarouter no connection for vehicles only.
 

Hi Thomas,

could you add the exact randomTrip/duarouter calls and the final error? Did you use some of the options for intermodal trips?

 

Best regards,

Mirko


-----Original-Nachricht-----
Betreff: [sumo-user] Duarouter no connection for vehicles only.
Datum: 2025-02-07T01:19:25+0100
Von: "Thomas Holland via sumo-user" <sumo-user@xxxxxxxxxxx>
An: "sumo-user@xxxxxxxxxxx" <sumo-user@xxxxxxxxxxx>

Hello,

I’ve been using SUMO to simulate trips across a massive OSM map of my city. Right now, I’m trying to use RandomTrips.py from the netedit gui (I know I can do it from command line, but I find it easier from gui) to give me random person trips instead of the random vehicle trips I was using before, with the end goal of creating a scenario where the trips are distributed between walk and vehicle based on travel time. So far, the trip generation is flawless, but when Duarouter is called, it throws connection errors whenever it tries to create vehicle routes.

Is there anything stupid that I might be doing? Can someone give me an example of what a normal configuration for this type of scenario would look like in the netedit randomtrips tool? I know for a fact that my network isn’t messed up because it works fine with vehicles only.

Hoping someone who knows more than me about this can help me out,

Thomas

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