0:50 AM
> To: r-help@r-project.org
> Subject: [R] Multiply each column of array by vector component
>
> Hi,
>
> I've got an array, say with i,jth entry = A_ij, and a vector,
> say with jth entry= v_j. I would like to multiply each column
> of the array by the corr
On Thu, 2007-11-15 at 17:50 +, [EMAIL PROTECTED] wrote:
> Hi,
>
> I've got an array, say with i,jth entry = A_ij, and a vector, say with jth
> entry= v_j. I would like to multiply each column of the array by the
> corresponding vector component, i,e. find the array with i,jth entry
>
> A_ij
If i understand your question, you can do:
x <- matrix(1:10, 2)
y <- sample(10,5)
apply(x, 1, function(.x)mapply(y, .x, FUN="*"))
On 15/11/2007, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I've got an array, say with i,jth entry = A_ij, and a vector, say with jth
> entry= v_j. I would
?sweep
b
On Nov 15, 2007, at 12:50 PM, [EMAIL PROTECTED] wrote:
> Hi,
>
> I've got an array, say with i,jth entry = A_ij, and a vector, say with
> jth
> entry= v_j. I would like to multiply each column of the array by the
> corresponding vector component, i,e. find the array with i,jth entry
>
On Nov 15, 2007 12:50 PM, <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I've got an array, say with i,jth entry = A_ij, and a vector, say with jth
> entry= v_j. I would like to multiply each column of the array by the
> corresponding vector component, i,e. find the array with i,jth entry
>
> A_ij * v_j
>
>
Hi,
I've got an array, say with i,jth entry = A_ij, and a vector, say with jth
entry= v_j. I would like to multiply each column of the array by the
corresponding vector component, i,e. find the array with i,jth entry
A_ij * v_j
This seems so basic but I can't figure out how to do it without a lo
6 matches
Mail list logo
