Hi
I have
>x<-matrix(c(1,2,3,4), ncol = 2)
>x
[,1] [,2]
[1,] 1 3
[2,] 2 4
I'd like these two be divided by their column totals. so 1/3 and 2/3 and 3/7
and 4/7. The obvious
>x/colSums(x)
[,1] [,2]
[1,] 0.3333333 1.0000000
[2,] 0.2857143 0.5714286
gives me the wrong results for off diagnal ones, since it divides the first
row by 3 and second by 7. The inelegant
>t(t(x)/colSums(x))
[,1] [,2]
[1,] 0.3333333 0.4285714
[2,] 0.6666667 0.5714286
gives me the right thing. I was wondering if there is any better way of
getting what I want.
thanks
Alex
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