Hi there,
If possible, I’d be very grateful for assistance with a quick query on the basis of openrouteservice isodistance calculation.
When I run an isodistance of (say) 100 km, I sometimes find that the isodistance boundary extends beyond a 100 km great circle distance of the start point. This seems a little counterintuitive, given that travelling 100 km by road, you would always expect to reach a point less than 100 km away “as the crow flies”.
Perhaps this is my misunderstanding (I am not a GIS specialist), and I would be grateful for any help with this.
Best regards,
Pete