biplot-methods {rrcov} | R Documentation |
Produces a biplot from an object (derived from) Pca-class
.
## S4 method for signature 'Pca': biplot(x, scale=1, ...)
x |
an object of class (derived from) "Pca" . |
scale |
The variables are scaled by lambda ^ scale and the
observations are scaled by lambda ^ (1-scale) where
lambda are the singular values as computed by
the Principal Components function. Normally 0 <= scale <= 1 , and a warning
will be issued if the specified scale is outside this range.
|
... |
optional arguments to be passed to the internal graphical functions. |
a plot is produced on the current graphics device.
signature(x = Pca)
: Plot a biplot, i.e. represent both
the observations and variables of a matrix of multivariate data on the same
plot. See also biplot.princomp
.Gabriel, K. R. (1971). The biplot graphical display of matrices with applications to principal component analysis. Biometrika, 58, 453–467.
Pca-class
,
PcaClassic
,
PcaRobust-class
.
require(graphics) biplot(PcaClassic(USArrests))