[R] matrix and a function - apply function

ADias diasandre at gmail.com
Wed Feb 2 15:12:01 CET 2011


Hi

I have this function and this matrix:

function(x,y) x+y/x

m<-matrix(c(1,2,4,2,10,8),3,2)

> m
     [,1] [,2]
[1,]    1    2
[2,]    2   10
[3,]    4    8

each row represent a point (x,y) in a chart and I want via my fucntion to
calculate the image in order to get this results:

for point (1,2) I would get 1+2/1 = 3
for point (2,10) I would get 2+10/2 = 7
for point (4,8) I would get 4+8/4 = 6

I have tried using sapply here but I get this:

> sapply(m,function(x,y) x+y/x)
Error in y/x : 'y' is missing

what I am doing wrong?

thanks
ADias
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