[R] multiply two matrixes with the different dimension column by column

[Alberto Monteiro]

Majid Iravani wrote:
>
> I would like to multiply two matrixes with the different dimension 
> column by column. Let make an example: If I have two matrixes "X" 
> and "Y"as follow:
> 
> X<- matrix(1:12, nrow=4, ncol=3, dimnames=list(c("A","B","C","D"), 
> c("stage1","stage2","stage3")))
> Y<- matrix(1:28, nrow=4, ncol=7, dimnames=list(c("A","B","C","D"), 
> c("site1","site2","site3","site4","site5", "site6","site7")))
> 
t(X) %*% Y will give something; I don't know if this is what
you want.

Alberto Monteiro