Elapsed time per observation of a Tracks object

Real elapsed time of each point from its own track's start, computed on demand from the time column and (for frame-indexed time) the [frame_rate()]. POSIXct time is used directly; numeric (frame) time requires a frame rate.

Usage

elapsed_seconds(ts, units = c("seconds", "minutes", "milliseconds"))

Arguments

ts

A [Tracks] object.

units

`"seconds"` (default), `"minutes"`, or `"milliseconds"`.

Value

A numeric vector aligned to the object's observations.

See also

[frame_rate()], [track_duration()]