Hi everybody!
I am trying to use the R-function princomp (or prcomp, I tried both, but
I get the same error anyway) in order to apply principal component
analysis to my data.
Now, this works fine:
let yoyoL be a list of lists :
yoyoL = [ [0.0592, 0.0126, 0.08351, 0.01857, 0.02188], [ ... ], ... ]
mat = r.matrix(r.unlist(yoyoL), nrow=5, byrow=True)
pca = r.princomp(r.t(mat), cor=True)
Okay, this works. But if I want to use the predict functionality of
princomp, like:
pred = r.predict(pca)
I obtain the following error:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
rpy.RException: Error in UseMethod("predict") : no applicable method for
"predict"
Does anybody know how I could deal with this problem?
Thank you very much!
Thomas.
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