[GraphHopper] Shortest vs fastest in CH mode

[Martin Sauvage]

Thanks for your answer Peter.

So what is the script command to import with "shortest" option
("graphhopper.sh import *.osm" is apparently for fastest option) ?

Martin

2015-03-17 11:19 GMT+01:00 Peter <graphhopper at gmx.de>:

>  Hi Martin,
>
> > but please confirm that prepared graph data (provided by graphhopper.sh
> import *.osm) is always the same regardless of chosen option (shortest or
> fastest).
>
> You'll have to do two different import steps and e.g. maintain two
> separate GraphHopper instances. That is the drawback of CH, but you can
> also disable it and use the flexibility mode.
>
> Kind Regards,
> Peter
>
>
> On 16.03.2015 11:45, Martin Sauvage wrote:
>
>  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).
>
>
>
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