Is it possible to make it so that graphhopper does not utilise certain road types when computing routes? Specifically I want to turn off open street map road features Service Road
.
Is this something that should be done in the code or in the data itself? E.g. I can imagine removing service roads from the dataset I pass into graphhopper.
Hi @njachowski,
You can create a new flagEncoder and add the road types you would like to disallow (e.g., “service”) to restrictedValues.
Best regards,
He
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Thanks @jie31best seems easy enough! I’ll give it a try.
In the meanwhile has anyone ever tried passing in customised data sets to accomplish a similar result? I see osmfilter
and osmconvert
could make it easy to remove the offending road features from the *.osm.pbf
file before I pass it into graphhopper.
It seems like passing in a trimmed down data file could have other benefits potentially, although it comes with trade-offs as well.
An alternative is to work with TagTransform before feeding the osm to GraphHopper.
Emux
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I would create a new FlagEncoder e.g. just extending CarFlagEncoder and calling defaultSpeedMap.remove("service")
in the constructor … hmmh but getFerrySpeed
requires it -> you would need to call this method with a static value.
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