perm_test: Permutation test for PLS and PLS-DA models
In ricoderks/Rcpm: General functions for the Center of Proteomics and Metabolomics (LUMC)

perm_test

R Documentation

Permutation test for PLS and PLS-DA models

Description

Permutation test for PLS and PLS-DA models. The Y variable is permutated and a model is then fitted. From this model the R2Ycum and Q2cum are calculated.

Usage

perm_test(pls_model, perm = 200, scale = FALSE)

Arguments

`pls_model`	The PLS or PLS-DA model created by the pls package
`perm`	number of permutations (default = 200)
`scale`	should scaling be used. Use the same settings as used in the original model (see details).

Details

The scaling for the PLS / PLS-DA model has to be given to the function. At the moment this can not be retrieved from the original model. The function sample() is used to randomize the Y variable. With set.seed() the random generator is seeded based on the current date time.