dataservices-api/doc/routing_functions.md

Routing Functions

The following functions provide turn-by-turn capabilities to calculate the route from one point to another using different modes, such as a car or bicycle. Currently, only the Mapzen routing service is available.

cdb_route_point_to_point(origin geometry(Point), destination geometry(Point), mode text, [options text[], units text])

Arguments

Name	Type	Description	Accepted values
origin	geometry(Point)	Origin point, in 4326 projection, which defines the start location.
destination	geometry(Point)	Destination point, in 4326 projection, which defines the end location.
mode	text	Type of transport used to calculate the isolines.	car, walk, bicycle or public_transport
options	text[]	(Optional) Multiple options to add more capabilities to the analysis. See Optional routing parameters for details.
units	text	Unit used to represent the length of the route.	kilometers, miles. By default is kilometers

Returns

Name	Type	Description
duration	integer	Duration in seconds of the calculated route.
length	real	Length in the defined unit in the units field. kilometers by default .
the_geom	geometry(LineString)	LineString geometry of the calculated route in the 4326 projection.

Examples

Insert the values from the calculated route in your table

INSERT INTO <TABLE> (duration, length, the_geom) SELECT duration, length, shape FROM cdb_route_point_to_point('POINT(-3.70237112 40.41706163)'::geometry,'POINT(-3.69909883 40.41236875)'::geometry, 'car')

Update the geometry field with the calculated route shape

UPDATE <TABLE> SET the_geom = (SELECT shape FROM cdb_route_point_to_point('POINT(-3.70237112 40.41706163)'::geometry,'POINT(-3.69909883 40.41236875)'::geometry, 'car', ARRAY['mode_type=shortest']::text[]))

Optional routing parameters

The optional value parameters must be passed using the format: option=value.

Name	Type	Description	Accepted values
mode_type	text	Type of route calculation	shortest (this option only applies to the car transport mode)