Continue_straight not being considered about openrouteservice HOT 4 CLOSED

OK, I have looked into this and the returning errors is indeed a bug which should be fixed shortly. However, the continue_straight option is not intended to tell the engine that it cannot backtrack on itself, more that it should try not to. As such, if a via point does invoke a u-turn, the engine will try and find an alternative that wouldn't back track. In the second example provided however, because the alternative would create a massive detour, the engine will still do the back tracking (in the second example, there is actually no way based on the data to get between the 3rd and 4th points without backtracking).

So in summary, the continue_straightoption does not rule out u-turns, it just gives a much higher weighting to those route segments. If however the alternative route segment is much longer (for example) then it could easily have an even higher weighting and so the engine will pick the first option which has a u-turn in it.

from openrouteservice.

A bit clarification perhaps. I tried to use it with foot_hiking and always got an 500 error as result.

https://api.openrouteservice.org/directions?coordinates=172.78333%2C-34.45366%7C172.7843%2C-34.45384%7C172.78567%2C-34.45513%7C172.78782%2C-34.45513%7C172.79071%2C-34.45503&profile=foot-hiking&preference=recommended&units=m&geometry=true&geometry_format=geojson&geometry_simplify=false&instructions=false&elevation=true&extra_info=surface&api_key=xxxx&continue_straight=true

https://api.openrouteservice.org/directions?coordinates=175.32463%2C-38.72576%7C175.32784%2C-38.72752%7C175.35013%2C-38.72162%7C175.35266%2C-38.71884&profile=foot-hiking&preference=recommended&units=m&geometry=true&geometry_format=geojson&geometry_simplify=false&instructions=false&elevation=true&extra_info=surface&api_key=xxxx&continue_straight=true

Expected behaviour would be that a 500 is returned only if the resulting route has a uturn at a waypoint, resulting in backtracking parts of the way.

Currently with missing intersections between footpaths you can get hiking routes with uturns and factor 2-5 times the direct of a direct route between the waypoints.

from openrouteservice.

@realthargor we are looking into this.

from openrouteservice.

👍

from openrouteservice.