View source: R/distance_speed.R
trk_mutate_dplyr | R Documentation |
Mutate a track (dplyr implementation) Add derived variables: distance from previous trackpoint, elapsed time since last trackpoint, speed (kph), bearing.
trk_mutate_dplyr(track)
track |
a data.frame with 3 cols: 'lat', 'lon', 'time' |
a data.frame with 4 additional cols
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