Computes [path_straightness()] for each trajectory in a `TrajSet`, ordering
each trajectory's points by its time column when one is recorded.
Usage
straightness_index(ts, x_col = ts@cols$x, y_col = ts@cols$y)
Arguments
- ts
A `TrajSet`.
- x_col, y_col
Names of the coordinate columns to use. Default to the
`TrajSet`'s recorded x/y columns (the real arena positions), so the metric
reflects the physical path rather than any display transform.
Value
A `data.frame` with one row per trajectory: the `TrajSet`'s id column
and a numeric `straightness` column.
See also
[path_straightness()], [tortuosity_ratio()]