HERE Routing API: Calculate Isoline

Calcuates isolines (POLYGON or MULTIPOLYGON) using the HERE 'Routing' API that connect the end points of all routes leaving from defined centers (POIs) with either a specified length, a specified travel time or consumption.

isoline(
  poi,
  datetime = Sys.time(),
  arrival = FALSE,
  range = seq(5, 30, 5) * 60,
  range_type = "time",
  type = "fastest",
  mode = "car",
  traffic = FALSE,
  aggregate = TRUE,
  url_only = FALSE
)

Arguments

poi	sf object, Points of Interest (POIs) of geometry type POINT.
datetime	POSIXct object, datetime for the departure (or arrival if arrival = TRUE).
arrival	boolean, are the provided Points of Interest (POIs) the origin or destination locations (default = FALSE)?
range	numeric, a vector of type integer containing the breaks for the generation of the isolines: (1) time in seconds; (2) distance in meters; (3) consumption in costfactor.
range_type	character, unit of the isolines: "distance", "time" or "consumption".
type	character, set the routing type: "fastest" or "shortest".
mode	character, set the transport mode: "car", "pedestrian" or "truck".
traffic	boolean, use real-time traffic or prediction in routing (default = FALSE)? If no datetime is set, the current timestamp at the moment of the request is used for datetime.
aggregate	boolean, aggregate (with function min) and intersect the isolines from geometry type POLYGON to geometry type MULTIPOLYGON (default = TRUE)?
url_only	boolean, only return the generated URLs (default = FALSE)?

Value

An sf object containing the requested isolines.

References

HERE Routing API: Calculate Isoline

Examples

# Provide an API Key for a HERE project
set_key("<YOUR API KEY>")

# Isochrone for 5, 10, 15, 20, 25 and 30 minutes driving time
isolines <- isoline(
  poi = poi,
  range = seq(5, 30, 5) * 60,
  url_only = TRUE
)