scompvar {ecocbo} | R Documentation |
Simulated components of variation
Description
scompvar
can be used to calculate the average component of variation
among units and the average component of variation within samples in terms
of sampling effort.
Usage
scompvar(data, n = NULL, m = NULL)
Arguments
data |
Object of class "ecocbo_beta" that results from |
n |
Number of samples to be considered. Defaults to NULL. |
m |
Site label to be used as basis for the computation. Defaults to NULL. |
Value
A data frame containing the values for the variation component
among sites compVarA
and in the residuals compVarR
.
Note
If m
or n
are left as NULL, the function will calculate
the components of variation using the largest available values as set in
the experimental design in sim_beta()
.
Author(s)
Edlin Guerra-Castro (edlinguerra@gmail.com), Arturo Sanchez-Porras
References
Underwood, A. J. (1997). Experiments in ecology: their logical design and interpretation using analysis of variance. Cambridge university press.
Underwood, A. J., & Chapman, M. G. (2003). Power, precaution, Type II error and sampling design in assessment of environmental impacts. Journal of Experimental Marine Biology and Ecology, 296(1), 49-70.
See Also
sim_beta()
plot_power()
sim_cbo()
Examples
scompvar(data = epiBetaR)
scompvar(data = epiBetaR, n = 5, m = 2)