Optimizing variables represented in a matrix

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On Thu, May 31, 2012 at 9:09 AM, Kjetil Halvorsen
If you want an helpful answer, you must describe your real problem
MUCH ? ?better! This is way too confused.
Absolutely! -- But we certainly can say:
Kjetil

On Thu, May 31, 2012 at 7:37 AM, ?<nataraj at orchidpharma.com> wrote:
Dear R-list members,

I have a matrix with non-numeric variables in it and I have to optimize the variables of the matrix in a formula using optim routine of the stats4 package. I know the matrix can only take numeric data
-- This statement is false. A matrix can contain data of only one type
-- no mixing -- but the type can be non-numeric, character for
instance.

However, as Kjetil said, your post is basically incoherent, so it is
unlikely that you'll get any help here unless you post something that
makes some sense.

-- Bert

-- Bert

and so I would like to ?know how to store non-numeric variables inside a matrix.
Say for example: The 3X3 matrix is ? ? 0.05V1+V2 ? ?0.31V1 ? ? ? ?0.05V1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0.31V1 ? ? ? 0.3V1+V2 ? ? ?0.5V1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?0.05V1 ? ? ? 0.5V1 ? ? ? ? 0.1V1+V2

The matrix is only for an example and the real matrix that I want to use is a 15X15 matrix ,here I would like to optimize the values of V1 and V2 using a formula.

Could you please help me how to go about to represent the matrix in R.

Thanks in advance!

B.Nataraj

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Bert Gunter
Genentech Nonclinical Biostatistics

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Optimizing variables represented in a matrix

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