biplot-methods: Biplot for Principal Components (objects of class 'Pca')
Description
Produces a biplot from an object (derived from) Pca-class.
Usage
## S3 method for class 'Pca':
biplot(x, scale=1, \dots)
Arguments
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
...
optional arguments to be passed to the internal graphical functions.
Side Effects
a plot is produced on the current graphics device.
References
Gabriel, K. R. (1971).
The biplot graphical display of matrices with applications to
principal component analysis.
Biometrika, 58, 453--467.