| Re: [sumo-user] Edges to TAZ assignment. |
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Hi, if you use all edges in a network file to a single TAZ (traffic analysis zone), all trips will be internal trips, i.e. all trips will arrive their destinations when they start their trips from certain
edges. I suppose it is not the case what you would like have. If you have a OD matrix, you should also have the definitions of the OD matrix, the respective district zones (if not, you should ask the data provider to get it) and perhaps the connection links
of each district zone. Within a TAZ file, the starts/ends edges for each certain TAZ (origin/destination) are defined, so that SUMO knows where the corresponding trips should start from/end to when doing traffic assignment.
If you could get the definition of the above mentioned district zones as shape files, you could use polyconvert (https://sumo.dlr.de/docs/POLYCONVERT.html
) to generate a TAZ-polygon xml file. With this generated TAZ polygon xml file, you could use edgesInDistricts.py (https://sumo.dlr.de/docs/Tools/District.html) to generate TAZ file with the suitable
start/end edges, which you define when running edgesInDistricts.py. Then you do not need to define your TAZ file manually. I hope this information helps you. Regard, Yun-Pang Von: sumo-user-bounces@xxxxxxxxxxx [mailto:sumo-user-bounces@xxxxxxxxxxx]
Im Auftrag von Akhil Raj Kizhakkan Hello SUMO Community, To use to OD2Trips, the documentation says edges has to be mapped to TAZs. (https://sumo.dlr.de/docs/Demand/Importing_O/D_Matrices.html) I am trying to use a whole city’s road network as the network file (downloaded from openstreetmaps as osm and converted to net file via netconvert, doesn’t have district information built in) and OD matrix that includes
origin destinations all around the city. Can I assign every edge in a network file to a single TAZ ?
OR Could anyone explain me why TAZs are important for OD2Trips to work ?
Thanks and regards, |