osmWebWizard fails when no edge exists for the selected traffic mode

[RobertHilbrich]

OSM WebWizard fails with a ValueError exception, when a scenario should be built with trains (for example), but there are no edges allowing trains in the network.

The following example fails as there are no tram edges in the selected area:

from osmWebWizard import Builder

def test_func():
    data = {
        "coords": ["13.33868980407715000", "52.50300440020900000", "13.34070682525635000", "52.50339624977660000"],
        "duration": 900,
        "vehicles": {"tram": {"count": 35.0, "fringeFactor": 20.0}},
        "poly": True,
        "publicTransport": False,
        "leftHand": False,
        "decal": False,
        "carOnlyNetwork": False,
        "osmMirror": "http://overpass.geofabrik.de/<redacted>/api/interpreter",
        "outputDir": "/tmp/outputdir",
    }
    builder = Builder(data, True)
    builder.build()

Error message:

Traceback (most recent call last):
...
  File "/Users/robert/Git-Repositories/sumo/tools/osmWebWizard.py", line 336, in build
    randomTrips.main(randomTrips.get_options(options))
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/robert/Git-Repositories/sumo/tools/randomTrips.py", line 221, in get_options
    raise ValueError("insertionRate must be positive.")
ValueError: insertionRate must be positive.

SUMO version: v1.18.0 OS: Linux and others

[RobertHilbrich]

randomTrips.py is to blame. Fix will follow.