[R] sapply help

Filoche
Fri, 03 Feb 2012 16:37:58 -0000

Hi every one.

I'm learning how to use sapply (and other function of this family).

Here's what I'm trying to do.

I have a vector of lets say 5 elements. I also have a matrix of nX5. I would
like to know how many element by column are inferior to each element of my
vector.

On this example:
v = c(1:5)
M = matrix(3,2,5)

I would like to have a vector at the end which give me

0 0 0 2 2

because in my matrix M, there's 2 row at my columns 4 and 5 that have number
< than values 4 and 5 respectively.

This is pretty simple to do with a loop, but I would like to know how to do
it with sapply.

I hope I have been clear enough.
Tx in advance.

Phil





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