Thank you, but sorry this code doesn't work. When I initiate the code, it returns this error :
Error in if (file == "") file <- stdout() else if (is.character(file)) { : the condition has length > 1
With this issue, I want to be confirmed some marginal things.
I appologize not had written down specific conditions.
First of all, I want to perform task for 1-9, 9 files, not just for 1, 2, and 9(I guess "c(1:2,9)" in your code seems like this). In this situation, isn't it right using c(1:9) instead?
Furthermore, I want to save each output with name of "rate_", and in file directory "C:/Users/Documents".
For example, if there were no loop and I would have intended output "rate_1", I would type like this :
write.csv(rate_1, "C:/Users/Documents/rate_1")
But I want to do this task for all 9 files.
So...I would be very appreciate if you let me how to deal these issues... 