compositions (version 1.10-1)

coloredBiplot: A biplot providing somewhat easier access to details of the plot.

Description

This function generates a simple biplot out of various source and allows to color the objects individually. (Warning: This preliminary version is likely to be changed in next edition)

Usage

coloredBiplot(xrf, scale=1, choice=c(1,2), pc.biplot=FALSE, 
        xcol="black", ycol="red", xpch=4, ypch=1, cex=1, 
        xarrows=FALSE, yarrows=!xarrows, xnames=NULL, ynames=NULL,...)

Arguments

xrf

a representation of the the co-information to be plotted, given by a result of princomp, prcomp or svd

scale

the way to distribute the singular values on the right or left singular vectors (see biplot)

choice

the components to be plotted (see biplot)

pc.biplot

should be scaled by sqrt(nrow(X))? (see biplot)

xcol

The color(s) to draw the points (or arrows) of the first set

ycol

The color(s) to draw the points (or arrows) of the second set

xpch

the plot character for the first set

ypch

the plot character for the second set

cex

the usual cex parameter for plotting

xarrows

wether or not to plot the arrows for the first dataset

yarrows

wether or not to plot the arrows for the second dataset

xnames

The names to write for the points of the first set

ynames

The names to write for the points of the second set

...

further parameters for plot

Value

• The function is called only for the sideeffect of plotting.

Details

The functions is provided for conveniance and is to be considered experimental.

See Also

biplot, plot.acomp

Examples

data(SimulatedAmounts)
coloredBiplot(xrf=svd(var(sa.outliers5)),pc.biplot=FALSE,xpch=c(1,2,3),xcol=1:3,ycol=c("blue","cyan","magenta"))