[GraphHopper] Shortest vs fastest in CH mode

[Martin Sauvage]

Hello,

I'm evaluating shortest / fastest route on Android using GH 0.4:

hopper = new GraphHopper().forMobile();
hopper.setCHWeighting("shortest");
hopper.load(path);

In this example:

https://graphhopper.com/maps/?point=48.064%2C-1.6228&point=48.0757%2C-1.6404&locale=fr-FR&layer=Lyrk

I don't see any difference using "fastest" and "shortest" options while it
seems taking "Rue de la Hallerais" is the shortest.

Peter, yesterday you said "Note: you can either operate as shortest or
fastest for CH, not both. So once you have prepared the graph (and eg.
copied to Android) no change is currently possible."

I suppose once I use "hopper.load(path)" I cannot change the option but
please confirm that prepared graph data (provided by graphhopper.sh import
*.osm) is always the same regardless of chosen option (shortest or fastest).

Thanks,
Martin
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