[R] Vector multiplication

[Henrique Dallazuanna]

Try this:

b %o% a

On Wed, Mar 17, 2010 at 3:03 PM, Kaspar Bernet <kbernet at student.ethz.ch> wrote:
> Hi,
>
> this may sound stupid (and it probably is), but I can't seem to find out how to multiply each element of a vector with each element of another vector where the result would be a matrix of dim[length(vectorOne),length(vectorTwo)] without using loops.
>
> example: if
>
> a -> c(1,2,3)
> b -> c(4,5,6)
>
> i'm looking for the operation that would yield:
>
>    [,1] [,2] [,3]
> [1,]    4    8   12
> [2,]    5   10   15
> [3,]    6   12   18
>
> any hints are greatly appreciated,
> kaspar
>
> ---------------------------------------------
> kaspar bernet kbernet at student.ethz.ch
> stationsstrasse 32 8442 hettlingen
> tel 052 301 12 33 mobil 079 789 75 61
>
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>



-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O