Example locations and timestamps used to demonstrate
AISextract() and interpolation at exact timestamps with
AISinterpolate(). Each row defines a target location and time for which
nearby vessel positions can be extracted or interpolated.
Format
A data frame with the following variables:
- point
Unique identifier of the target location.
- lon, lat
Longitude and latitude (WGS84).
- datetime
Target date and time (UTC).