[R] PCA biplot question

[bady at univ-lyon1.fr]

Hi, hi all,

> Hi everyone,
> I'd like to project two pcas onto one device window.
> I plot my first PCA:
> biplot(prcomp(t(cerebdevmat)), var.axes=FALSE, cex=c(1,.1),
> pc.biplot=TRUE)
> Now I'd like to project the features of another PCA onto this graph.
> Any suggestions?

You can used co-inertia analysis (coinertia in package ade4)
or maybe procuste  analysis (package vegan, ade4, shapes)
these analyses are adapted to the simultaneous analyses of two tables.

cheers,


Pierre



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