Is there any plan to make the isochronen API work the opposite way ? Means a question like “give me all points from which I can reach a point in 10 minutes” ? Sometimes it will give very different results as the current API with a start point. I have some cases here with a lot of one-ways where the resulting polygons are very different. I tested it with ESRI which has the option To- or FromPoint.
Hi @Freudi,
You are right, these are two different calculations. A standard isochrone follows the roads from the start point towards the exterior. Your question is the opposite direction: the roads that arrive at the end point. When there are many one-way streets, the two polygons can be very different.
For the moment, the Woosmap isochrone supports only the first direction. The endpoint accepts one origin and there is no parameter to invert the direction. So it is not possible today.
I have transmitted your request to the routing team. I cannot give you a date at this stage, but the need is noted.
If you need a solution before we support this natively, there is an approximation with the Distance Matrix: create a set of points around your target, send them as origins with the target as the only destination, and keep the points under your time limit. It is not precise and it consumes many requests, so it is more adapted to an analysis than to a live feature. Tell me if it is useful and I will send you the details.
Best regards