db4ba4cd_I_Resource_Attributes___Xively__Description
[Attribute] waypoints [Required in an update?] No [Can be directly set?] No [Description] 
A list of locations for a mobile Feed. You cannot create, edit, or delete location waypoints. Xively creates a new location waypoint automatically in real time when the elevation, latitude, or longitude of a device changes. Location waypoints cannot be created using buffered historical data.
API Resource Attributes - Xively
Description