Amelia of Aukland writes:
> Suppose instead of having above dataframe having single data for 
> variable 1 and variable 2, I have following data as
> 
> variable_1           variable_2
> 
>        10                         20
>         40                         30 
>         3                          11

And so you do:
foo <- data.frame(variable_1=c(10,40,3), variable_2=c(20,30,11))

> I need to run the function 'fun' for each pair of values taken by 
> variable_1 and variable_2 separately. Also, the results (= 30, 70 
> and 14) obtained for each of above pairs should be stored in 
> different csv files, say "ans1.csv", "ans2.csv" and "ans3.csv" 
> respectively which I can use for further analysis. (In reality each 
> of these output files will consists of 1000 records).

No function is necessary, though apply() would work as has been pointed 
out.
foo$answer <- foo$variable_1 + foo$variable_2

Writing to a csv is another matter--
write.csv(foo, 'foo.csv')


-- 
Curt Seeliger, Data Ranger
Raytheon Information Services - Contractor to ORD
seeliger.curt@epa.gov
541/754-4638



	[[alternative HTML version deleted]]

