[R] Help on apply() function

[megh]

Hi all, can you please clarify me what is the wrong with following codes :

set.seed(30)
z = matrix(rnorm(10), 5, 2)
apply(z, 1, function(x) sum(z[x,1]*1, z[x,2]*3))

However I can not get the desired result. For example, "sum(z[1,1]*1,
z[1,2]*3)" gives -5.822442 which is actually correct. Am I missing something
in apply() function?

Regards,


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