Hello,
I have used "prcomp" and the variances for the first 3 PC's are 2.65,
1.97 and 0.38.
When I plot the principal component values for each data point I can see
that the points lie in a plane as one might expect from the variances.
But this plane is diagonal through the 3D space of the first 3 PC's. My
question is: is it usual to follow a PC analysis with an eigen analysis
to align this plane with with 2 principal directions, or is there a way
of incorporating this into "prcomp".
Thanks, David