
Hi guys,

Very new to R and your help would be highly appreciated for the following
problem. I am trying to create a simple function which registers values
within an array through a for loop. These are the steps I have followed:

1) Declared 2 global matrices
2) Create function mat() with i as an input
3) constructed the for loop
4) called mat(2)

The problem is that when i try to get y[4] and f[5] the output is: [1] NA
 
my concern is that i am not addressing any of the following topics:
1) definition of global variable
2) the argument does not go through the for loop
3) the matrices definition is not correct
4) other

Please check my code below:

y=c(NA)
f=c(NA)
mat<-function(i)
{
	for (k in i:10)
	{
		y[k]=k+1
		f[k]=y[k-1]/2		
	}
}
mat(2)

Any thoughts or recommendations would be highly appreciated.

Thanks in advance,

N 
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