biplot.mvr {pls}R Documentation

Biplots of PLSR and PCR Models.

Description

Biplot method for mvr objects.

Usage

## S3 method for class 'mvr':
biplot(x, comps = 1:2, which = c("x", "y", "scores", "loadings"),
           var.axes = FALSE, xlabs, ylabs, main, ...)

Arguments

x an mvr object.
comps integer vector of length two. The components to plot.
which character. Which matrices to plot. One of "x" (X scores and loadings), "y" (Y scores and loadings), "scores" (X and Y scores) and "loadings" (X and Y loadings).
var.axes logical. If TRUE, the second set of points have arrows representing them.
xlabs either a character vector of labels for the first set of points, or FALSE for no labels. If missing, the row names of the first matrix is used as labels.
ylabs either a character vector of labels for the second set of points, or FALSE for no labels. If missing, the row names of the second matrix is used as labels.
main character. Title of plot. If missing, a title is constructed by biplot.mvr.
... Further arguments passed on to biplot.default.

Details

biplot.mvr can also be called through the mvr plot method by specifying plottype = "biplot".

Author(s)

Ron Wehrens and Bjørn-Helge Mevik

See Also

mvr, plot.mvr, biplot.default

Examples

data(oliveoil)
mod <- plsr(sensory ~ chemical, data = oliveoil)
## Not run: 
## These are equivalent
biplot(mod)
plot(mod, plottype = "biplot")

## The four combinations of x and y points:
par(mfrow = c(2,2))
biplot(mod, which = "x") # Default
biplot(mod, which = "y")
biplot(mod, which = "scores")
biplot(mod, which = "loadings")

## End(Not run)

[Package pls version 2.1-0 Index]