samp.between function

Shuffles a sequence among groups defined by the input vector

Used to generate a permutation of a sequence 1:length(lev) . blocks of observations are permutted, according to the vector lev passed to the function.

samp.between(lev)

Arguments

• lev: a vector containing the groups to be permuted.

Returns

a vector 1:length(lev) (with blocks defined by data) randomly permuted. Usually, one passes the result to reorder observations in a data set in order to carry out permutation-based tests

References

Goudet J. (2005). Hierfstat, a package for R to compute and test variance components and F-statistics. Molecular Ecology Notes. 5:184-186

Author(s)

Jerome Goudet, DEE, UNIL, CH-1015 Lausanne Switzerland

jerome.goudet@unil.ch

See Also

samp.within, g.stats.glob.

Examples

samp.between(rep(1:4,each=4))
#for an application see example in g.stats.glob