[R] Optimizing variables represented in a matrix

[Bert Gunter]

Inline ...

On Thu, May 31, 2012 at 9:09 AM, Kjetil Halvorsen
<kjetilbrinchmannhalvorsen at gmail.com> wrote:
> 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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>> and provide commented, minimal, self-contained, reproducible code.
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.



-- 

Bert Gunter
Genentech Nonclinical Biostatistics

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