matrix multiplication of vectors

[Thomas Lumley]

An incompatibility:
S-PLUS
> x<-1:3
>  x%*%x
     [,1] 
[1,]   14
>  x%*%t(x)
     [,1] [,2] [,3] 
[1,]    1    2    3
[2,]    2    4    6
[3,]    3    6    9

R
> x<-1:3
> x%*%x
     [,1]
[1,]   14
> x%*%t(x)
Error in x %*% t(x) : non-conformable arguments


Thomas Lumley
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