Re: [R] Help in using PCR

From: Bjørn-Helge Mevik <b.h.mevik_at_usit.uio.no>
Date: Wed, 02 Jul 2008 10:32:22 +0200

Gavin Simpson <gavin.simpson_at_ucl.ac.uk> writes:

> Ok, lets sort this out. [Not tested as I don't have your data]
>
> df <- data.frame(resp = cancerv1[, 408],
> VARS = as.matrix(cancerv1[, 2:407])

Actually, you _do_ need an I() here:

df <- data.frame(resp = cancerv1[, 408],

                 VARS = I(as.matrix(cancerv1[, 2:407])))

otherwise data.frame() will split the matrix into single coloumn variables.

-- 
Bjørn-Helge Mevik

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Received on Wed 02 Jul 2008 - 08:36:18 GMT

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