On 24/09/14 03:10, carol white wrote:
Hi, If I want to divide the column of a matrix by the sum of the
column, should I loop over the columns or can I use apply family?
m1 <- apply(m,2,function(x){x/sum(x)})
should do what you want IIUYC.
cheers,
Rolf Turner
--
Rolf Turner
Technical Editor ANZJS
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