slplot-pcaRes-method: Side by side scores and loadings plot

In hredestig/pcaMethods: A collection of PCA methods

Side by side scores and loadings plot

Description

A common way of visualizing two principal components

Usage

slplot(object, pcs=c(1,2), scoresLoadings=c(TRUE, TRUE),
sl="def", ll="def", hotelling=0.95, rug=TRUE, sub=NULL,...)

Arguments

object	a pcaRes object
pcs	which two pcs to plot
scoresLoadings	Which should be shown scores and or loadings
sl	labels to plot in the scores plot
ll	labels to plot in the loadings plot
hotelling	confidence interval for ellipse in the score plot
rug	logical, rug x axis in score plot or not
sub	Subtitle, defaults to annotate with amount of explained variance.
...	Further arguments to plot functions. Prefix arguments to par() with 's' for the scores plot and 'l' for the loadings plot. I.e. cex become scex for setting character expansion in the score plot and lcex for the loadings plot.

Details

This method is meant to be used as a quick way to visualize results, if you want a more specific plot you probably want to get the scores, loadings with scores(object), loadings(object) and then design your own plotting method.

Value

None, used for side effect.

Note

Uses layout instead of par to provide side-by-side so it works with Sweave (but can not be combined with par(mfrow=..))

Author(s)

Henning Redestig

See Also

pca, biplot

Examples

data(iris)
pcIr <- pca(iris[,1:4], scale="uv")
slplot(pcIr, sl=NULL, spch=5)
slplot(pcIr, sl=NULL, lcex=1.3, scol=as.integer(iris[,5]))

hredestig/pcaMethods documentation built on Sept. 30, 2023, 10:38 a.m.