Why does OSRM not match all GPS points?
Map matching matches/snaps given GPS points to the road network in the most plausible way. Please note the request might result multiple sub-traces. Large jumps in the timestamps (> 60s) or improbable transitions lead to trace splits if a complete matching could not be found. The algorithm might not be able to match all points.
How is the mode of Transportation determined in OSRM?
All OSRM HTTP requests use a common structure. The following syntax applies to all services, except as noted. Mode of transportation, is determined statically by the Lua profile that is used to prepare the data using osrm-extract . Typically car , bike or foot if using one of the supplied profiles.
What are the options in the OSRM API?
In addition to the general options the following options are supported for this service: Use location with given index as source. Use location with given index as destination. Unlike other array encoded options, the length of sources and destinations can be smaller or equal to number of input locations;
When to use start or end coordinate in OSRM?
It is possible to explicitely set the start or end coordinate of the trip. When source is set to first, the first coordinate is used as start coordinate of the trip in the output. When destination is set to last, the last coordinate will be used as destination of the trip in the returned output.
Which is the main routing machine type in OSRM?
OSRM – this is the main Routing Machine type with functions such as Route and Table. You initialize it with a EngineConfig. It does all the heavy lifting for you. Each function takes its own parameters, e.g. the Route function takes RouteParameters, and a out-reference to a JSON result that gets filled.
Where do I find horizontalaccuracy in OSRM?
Use Location.getAccuracy () on Android or CLLocation.horizontalAccuracy on iOS. This value is used to determine which points should be considered as candidates (larger radius means more candidates) and how likely each candidate is (larger radius means far-away candidates are penalized less).