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
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