site_fidelity {amt} | R Documentation |
Test for site fidelity of animal movement.
Description
Calculates two indices (mean squared displacement and linearity) to test for site fidelity. Significance testing is done by permuting step lengths and drawing turning angles from a uniform distribution.
Usage
site_fidelity(x, ...)
## S3 method for class 'steps_xy'
site_fidelity(x, n = 100, alpha = 0.05, ...)
Arguments
x |
A track |
... |
None implemented |
n |
Numeric scalar. The number of simulated trajectories. |
alpha |
Numeric scalar. The alpha value used for the bootstrapping. |
Value
A list of length 4. msd_dat
and li_dat
is the mean square distance and linearity for the real date. msd_sim
and 'li_sim“ are the mean square distances and linearities for the simulated trajectories.
References
Spencer, S. R., Cameron, G. N., & Swihart, R. K. (1990). Operationally defining home range: temporal dependence exhibited by hispid cotton rats. Ecology, 1817-1822.
Examples
# real data
data(deer)
ds <- deer |> steps_by_burst()
site_fidelity(ds)
[Package amt version 0.2.2.0 Index]