Show HN: Configurable Route Planning – Avoid left turns, areas and more

Re:Show HN: Configurable Route Planning – Avoid left turns, ... by _-___________-_ on Sunday February 16, 2020 @01:47AM (#22340211)

How difficult would it be to adapt GraphHopper for routing on things that are not roads/paths using things that are not cars/bikes/feet? For example, routing on canals using boats?

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Re:Show HN: Configurable Route Planning – Avoid left turns, ... by xnyhps on Sunday February 16, 2020 @02:37AM (#22340407)

Last time I looked at it, none of the routers for OSM were good at routing over areas in OSM. For example, when planning a route on foot over a large square, the route often follows the outside edge. This becomes even harder when the area contains "holes" (i.e. a multipolygon). So for canals it could work, but if you need to cross a lake with an island you're in trouble.

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Re:Show HN: Configurable Route Planning – Avoid left turns, ... by sp8962 on Sunday February 16, 2020 @05:25AM (#22340901)

See https://github.com/PlazaRoute for a preprocessing solution that is routing engine agnostic.

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Re:Show HN: Configurable Route Planning – Avoid left turns, ... by karussell on Sunday February 16, 2020 @04:58AM (#22340813)

It already is adapted https://github.com/geofabrik/OpenRailRouting and I know also from a couple of services having it adapted to boats. But yes, routing on areas is still not properly possible (only via emulating paths on it).

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Re:Show HN: Configurable Route Planning – Avoid left turns, ... by Doctor_Fegg on Sunday February 16, 2020 @02:16AM (#22340317)

Certainly doable, but OSM data for boating isn’t in a great state yet.

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