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build query for isochrone-dist API

Usage

build_iso_query(
  point,
  source,
  value,
  type,
  profile,
  direction,
  constraints,
  distance_unit,
  time_unit
)

Arguments

point

character; point formated with x_to_iso.

source

character; This parameter specifies which source will be used for the calculation. Currently, "valhalla" and "pgr" sources are available (default "pgr"). See section SOURCE for further information.

value

numeric; A quantity of time or distance.

type

character; Specifies the type of calculation performed: "time" for isochrone or "distance" for isodistance (isochrone by default).

profile

character; Type of cost used for calculation: "pedestrian" for #' pedestrians and "car" for cars. and "car" for cars ("pedestrian" by default).

direction

character; Direction of travel. Either define a "departure" point and obtain the potential arrival points. Or define an "arrival" point and obtain the potential points ("departure" by default).

constraints

Used to express constraints on the characteristics to calculate isochrones/isodistances. See section CONSTRAINTS.

distance_unit

character; Allows you to specify the unit in which distances are expressed in the answer: "meter" or "kilometer" (meter by default).

time_unit

character; Allows you to specify the unit in which times are expressed in the answer: "hour", "minute" or "second" (minutes by default).

Value

httr2_request object