Computes [path_sinuosity()] (Benhamou 2004) for each trajectory in a `Tracks`,
ordering each trajectory's points by its time column when one is recorded.
Distance-calibrated: with a `distance_scale` set the step lengths are in real
units, so the reported sinuosity is in \(1/\sqrt{\mathrm{unit}}\).
Usage
sinuosity(ts, x_col = ts@cols$x, y_col = ts@cols$y)
Arguments
- ts
A `Tracks`.
- x_col, y_col
Names of the coordinate columns to use. Default to the
`Tracks`'s recorded x/y columns (the real recorded positions).
Value
A `data.frame` with one row per trajectory: the `Tracks`'s id column
and a numeric `sinuosity` column (`>= 0`).
See also
[path_sinuosity()], [straightness_index()], [tortuosity_ratio()],
[set_distance_scale()]
