R: Biplots of PLSR and PCR Models.

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 2.7-0 Index]