It is assumed that the dataset is grouped by flight id and that position reports are sorted by ascending timestamp.
Arguments
- prs
dataset containing position reports. Two variables are used:
timestamp
andaltitude
(feet)- vert_limit
the maximum absolute vertical rate for a segment to be considered level (default = 5 feet/s)
See also
Other analysis:
cumulative_distance()
,
cumulative_time()
,
filter_outlier()
,
smooth_positions()