plotld

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Plot principal component loadings

Plot principal component loadings.

Usage
plotld(x, npc=3, main="Loadings", lty=1, lwd=4 / 1:npc, col=gray(0:(npc-1) / npc), ylim=range(loadings), abs.=FALSE, cex=.8, ylab=if(abs.) "abs(loading)" else "loading", legend.x=NULL, legend.y=NULL)
Arguments
x
A matrix or dataframe, passed directly to princomp.
npc
Number of principal components to plot. Default 3.
main
Plot title. Default "Loadings".
lty
Line type for for plotted lines. Default 1.
lwd
Line width of plotted lines. The default is ugly but effective: 4 / 1:npc.
col
Color of plotted lines. Default is a range of grays: gray(0:(npc-1) / npc).
ylim
Vertical limits of the graph. Default range(loadings).
abs.
Use absolute values of loadings. Default FALSE.
cex
Character expansion for axis and legend text. Default .8.
ylab
Default "loading".
legend.x, legend.y
Position of the legend. Default NULL, meaning automatic. For no legend, use an out-of-range legend.x or legend.y.
See Also

princomp, plotpc

Aliases
  • plotld
Examples
data(iris)
x <- iris[, -5] # -5 to drop Species
plotld(x)
Documentation reproduced from package plotpc, version 1.0.4, License: GPL-3

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