Get the number of activities in a trajectory. length returns the number of first-level activities (sub-trajectories not included). get_n_activities returns the total number of activities (sub-trajectories included).

# S3 method for trajectory
length(x)

get_n_activities(x)

## Arguments

x
the trajectory object.

## Value

Returns a non-negative integer of length 1.

[.trajectory, [[.trajectory, join.