Values.IsolineThresholdsSourceSpecifies the time or distance limits used to calculate reachable areas. You can provide up to five thresholds for a single type to generate multiple isolines in a single request. For example, you might request areas reachable within 5, 10, and 15 minutes, or within 1, 2, and 5 kilometers.
type nonrec t = {distance : DistanceThresholdList.t option;List of travel distances in meters. For example, [1000, 2000, 5000] would calculate areas reachable within 1, 2, and 5 kilometers.
*)time : TimeThresholdList.t option;List of travel times in seconds. For example, [300, 600, 900] would calculate areas reachable within 5, 10, and 15 minutes.
*)}val to_value :
t ->
[> `Structure of
(string
* [> `List of [> `Long of DistanceThresholdListMemberLong.t ] list ])
list ]