ferrobus.calculate_bulk_isochrones

ferrobus.calculate_bulk_isochrones#

ferrobus.calculate_bulk_isochrones(transit_model, start_points, departure_time, max_transfers, cutoff, index)#

Calculate isochrones from multiple starting points in batch mode

This is an optimized bulk version of calculate_isochrone that processes multiple starting points in parallel, which is significantly faster than repeated individual calculations.

Parameters:

  • transit_model (TransitModel) – The transit model to use for routing.

  • start_points (list[TransitPoint]) – List of starting locations for isochrone calculations.

  • departure_time (int) – Time of departure in seconds since midnight.

  • max_transfers (int) – Maximum number of transfers allowed in route planning.

  • cutoff (int) – Maximum travel time in seconds to include in the isochrones.

  • index (IsochroneIndex) – Pre-computed isochrone spatial index for the area.

Returns:

List of WKT representations of the resulting isochrones, matching the order of the input starting points.

Return type:

list[str]

Raises:

RuntimeError – If the batch isochrone calculation fails.