OSRM- Point to Point
Point-to-point is used to find the distance between two points on LineString and Link items and the perimeter of Polygon items.
Select Analysis > Routing > Point-to-point > OSRM.
OSRM is a powerful open-source routing engine; it uses a custom database and can create routes faster than other options. The custom databases can be created using the OS Network Manager. The databases are stored in the OSRM folder of the SIS Desktop 9.1 installation.
OSRM is available as standard for all SIS Desktop 9.1 installations; Greater London and Hertfordshire are pre-configured.
Greater London
Finds a route over the road network in an extract of the OpenStreetMap database for Greater London, using the 'car' profile.
Hertfordshire
Finds a route over the road network in an extract of the OpenStreetMap database for Hertfordshire using the 'car' profile.
When run, the result of the expression can be expressed in Time or Distance.