coloredBiplot {compositions}  R Documentation 
A biplot providing somewhat easier access to details of the plot.
Description
This function generates a simple biplot out of various sources and allows to give color and symbol to the xobjects individually.
Usage
## Default S3 method:
coloredBiplot(x, y, var.axes = TRUE, col,
cex = rep(par("cex"), 2), xlabs = NULL, ylabs = NULL, expand=1,
xlim = NULL, ylim = NULL, arrow.len = 0.1, main = NULL, sub = NULL,
xlab = NULL, ylab = NULL, xlabs.col = NULL, xlabs.bg = NULL,
xlabs.pc=NULL, ...)
## S3 method for class 'princomp'
coloredBiplot(x, choices = 1:2, scale = 1,
pc.biplot=FALSE, ...)
## S3 method for class 'prcomp'
coloredBiplot(x, choices = 1:2, scale = 1,
pc.biplot=FALSE, ...)
Arguments
x 
a representation of the the coinformation to be plotted, given by a result of princomp or prcomp; or the first set of coordinates to be plotted 
y 
optional, the second set of coordinates to be potted 
var.axes 
if 'TRUE' the second set of points have arrows representing them as (unscaled) axes 
col 
one color (to be used for the y set) or a vector of two colors
(to be used for x and y sets respectively, if 
cex 
the usual cex parameter for plotting; can be a length2 vector to format differently x and y labels/symbols 
xlabs 
names to write for the points of the first set 
ylabs 
names to write for the points of the second set 
expand 
expansion factor to apply when plotting the second set of points relative to the first. This can be used to tweak the scaling of the two sets to a physically comparable scale 
xlim 
horizontal axis limits 
ylim 
vertical axis limits 
arrow.len 
length of the arrow heads on the axes plotted if 'var.axes' is true. The arrow head can be suppressed by 'arrow.len=0' 
main 
main title 
sub 
subtitle 
xlab 
horizontal axis title 
ylab 
vertical axis title 
xlabs.col 
the color(s) to draw the points of the first set, if

xlabs.bg 
the filling color(s) to draw the points of the first set, if

xlabs.pc 
the plotting character(s) for the first set, if

scale 
the way to distribute the singular values on the
right or left singular vectors for princomp and prcomp objects
(see 
choices 
the components to be plotted (see 
pc.biplot 
should be scaled by 
... 
further parameters for plot 
Details
The functions is provided for convenience.
Value
The function is called only for the side effect of plotting. It is a modification of the standard R routine 'biplot'.
Author(s)
Raimon TolosanaDelgado, K.Gerald v.d. Boogaart http://www.stat.boogaart.de
See Also
Examples
data(SimulatedAmounts)
coloredBiplot(x=princomp(acomp(sa.outliers5)),pc.biplot=FALSE,
xlabs.pc=c(1,2,3), xlabs.col=2:4, col="black")