Hi Pankaj

if it is the same 10 conditions, I would merge the matrices. (Otherwise 
subset both matrices on the identical conditions)
And then calculate the whole correlation/covariance matrix and extract 
the relevant regions, With this small number of genes, it will be done 
almost instantaneously.

Cheers,
björn
> Hi All,
>
> I have two matrices   A and B. 
> A contains expression values for 1000 genes in 10 conditions  A[1:1000,1:10]
> B contains metabolic profiles of 100 metabolites in 10 conditions B[1:100,1:10]
>
> Is there a way that I can calculate gene-metabolite correlation OR co-variance  matrix using A and B ?
>
> Thanks
>
> Pankaj2k3  
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>
>   
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