minpermute {codep} | R Documentation |
Calculate the number of permutations suitable for testing Multiscale Codependence Analysis.
minpermute(alpha,nbtest,margin=1,ru=3)
alpha |
The familywise type I error threshold allowable for the complete analysis. |
nbtest |
The number of test performed (the number of
eigenvectors in the ‘mem’ object in the case of
|
margin |
A margin allowed for the number of permutation. Default value: 1. |
ru |
The magnitude of the round-up to apply to the number of permutations. |
This function calculate the number of permutations for use with
permute.cdp
. Parameter margin
allows to apply a
safe margin to the number of permutations. The minimal suitable value
for this parameter is 1. Parameter ru
allows one to round-up
the number of permutations. A value of 0 implies no round-up, a value
of 1 a round-up to the next ten, 2 a round-up to the next hundred, and
so on. Function minpermute
is called internally by
permute.cdp
in case permute = NA
. In that case,
the margin is set to 10 (margin = 10
) and the outcome is
rounded-up to the next thousand (ru = 3
). This function is
meant for users that wish to apply their own margins and round-up
factors to calculate the number of permutations for use with
permute.cdp
.
The minimum number of permutation to be used for
permute.cdp
.
Guillaume Guénard, Département des sciences biologiques, Université de Montréal, Montréal, Québec, Canada.
Guénard, G., Legendre, P., Boisclair, D., and Bilodeau, M. 2010. Multiscale codependence analysis: an integrated approach to analyse relationships across scales. Ecology 91: 2952-2964
# For a 5% threshold under 50 tests. minpermute(alpha = 0.05, nbtest=50) # Allowing more margin (implies more computation time). minpermute(alpha = 0.05, nbtest=50, margin=10, ru=3)