I'm using service areas API to generate isochrones and the API is currently returning rings for the service areas (which is cutting out isochrones within the wider isochrones).
E.g. the 10-minute isochrone has the 5-minute isochrone is cut out of it, resulting in a multi polygon instead of a polygon.
This should be solved by using the parameter &splitPolygonAtBreaks=true to return disks, instead of rings. The documentation is below:
Unfortunately, this parameter does not seem to work, changing between "&splitPolygonAtBreaks=false" and "&splitPolygonAtBreaks=true" does not change what is returned using the API.
Please can anyone help? Not sure if this is a broken API.