I'm intending to calculate the walking distance (not the linear distance, but the "real travelled distance") to several locations (e.g. social infrastructure). Thus I will have to create a routable network.
Most implementations I found are based on a single point only. This would be hell of work, so I hoped there is a possible solution to do the calculation at once for a set of multiple points.
I think the way to go would be PostgreSQL and pgrouting with dijkstra, but I'm not sure. My input layer is a point layer with the given locations, then I have OSM data which has to be made routable. What is the best way to achieve getting isochrone or isodistance (travelled distance) maps?
I also took a look at grapphopper, which seems to be great and easy to configure for an isochrone map of a single point, but I didn't find an implementation for a multipoint isochrones case.