| 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))