[R] how to divide each column in a matrix by its colSums?

[casperyc]

Hi,

I have a matrix, say 
m=matrix(c(
	983,679,134,
	383,416,84,
	2892,2625,570
	),nrow=3
)

i can find its row/col sum by

rowSums(m)
colSums(m)

How do I divide each row/column by its rowSum/colSums and still return in
the matrix form?
(i.e. the new rowSums/colSums =1)

Thanks.

Casper

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