[R] Help with apply()

[Jim Lemon]

On 02/08/2010 12:26 PM, Nathan S. Watson-Haigh wrote:
> I have a 2 column data.frame:
>
>  > d[1:5,]
> a b
> 1 80015 C
> 2 80016 B
> 3 80023 C
> 4 80062 B
> 5 80069 B
>
> I want to apply a function across each row:
>
>  > for(i in 1:nrow(d)) {
> + myFun(con, d[i,]$a, d[i,]$b)
> + }
>
> How do I do this using apply()? I'm unsure how to tell apply() to pass
> data from columns a and b for a given row as arguments to the function
> myFun().
>
Hi Nathan,
apply doesn't work with data frames unless they can be coerced to 
matrices or arrays (and sometimes not even then). What's wrong with 
using the code you have above?

Jim