Re: [sumo-user] Using TAZs for random trips

[Jakob Erdmann <namdre.sumo@xxxxxxxxx>]

1. The edge is source as well as sink

2. This is what od2trips does (pick random edges in each taz): https://sumo.dlr.de/docs/Demand/Importing_O/D_Matrices.html  but if you wan't the flows between taz to be random you may as well use randomTrips.py: https://sumo.dlr.de/docs/Tools/Trip.html

3. you can assign stops to generated trips and routes: https://sumo.dlr.de/docs/Tools/Routes.html#addstops2routespy

4. no (though it depends what you want to use the TAZ for)

5. If you want to use od2trips, I recommend https://sumo.dlr.de/docs/Demand/Importing_O/D_Matrices.html#tazrelation_format.  Of course you can also use edges or nodes as OD (nodes has the advantage of generating routes without turnarounds because you never pick the "wrong" starting direction edge but you can also avoid this with edge-based routes (i.e. by using randomTrips option --remove-loops).

Am Sa., 1. Juni 2024 um 14:38 Uhr schrieb Rohan Verma via sumo-user <sumo-user@xxxxxxxxxxx>:

Dear community,

I created TAZs using netedit.exe. The TAZ file created has the following:

<tazSource id="-E11" weight="1.00"/>

<tazSink id="-E11" weight="1.00"/>

1. Does this mean that edge "-E11" is used as a source as well as a sink? Or does this mean that edge "-E11" is the source and its own sink?

2. Also, I want to create random trips from one TAZ to another. I want a random edge from one TAZ to be used as a source and another random edge from another TAZ to be used as a sink with random flow. Is this possible? If yes, please direct me on how to achieve this.

3. Can a stop also be assigned when using TAZs to generate trips?

4. Is it necessary to have an OD matrix to use TAZs?

5. To create a hypothetical OD matrix to be used in SUMO, what should be the format? Should we use nodes or lanes/edges? 

Thanks and regards,

Rohan

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