part of data transformation principal component regression Partial Least Square regression non-iterative Partial Least Squares term request from Ralf Weber and Gavin Lloyd, University of Birmingham NIPALS Philippe Rocca-Serra https://cran.r-project.org/web/packages/nipals/vignettes/nipals_algorithm.pdf a data transformation which finds principal component by applying non-linear iterative partial least squares algorithm nipals(x, ncomp = min(nrow(x), ncol(x)), center = TRUE, scale = TRUE, maxiter = 500, tol = 1e-06, startcol = 0, fitted = FALSE, force.na = FALSE, gramschmidt = TRUE, verbose = FALSE) https://www.rdocumentation.org/packages/mixOmics/versions/6.3.2/topics/nipals metadata incomplete