Dear R helpers,
 
Suppose I am dealing with no of interest rates at a time and the no of interest 
rates I am selecting for my analysis is random i.e. it can be 2, can be 10 or 
even higher. The R-code I had written (with the guidance of R helpers obviously 
and I am really grateful to all of you) as of now is sort of hard coding when 
it comes to reading interest rates as an input e.g.
 
## INPUT
 
rate_1   = read.csv('rate1_range.csv')
rate_2   = read.csv('rate2_range.csv')
rate_3   = read.csv('rate3_range.csv')
rate_4   = read.csv('rate4_range.csv')
 
prob_1   = read.csv('rate1_probs.csv')
prob_2   = read.csv('rate2_probs.csv')
prob_3   = read.csv('rate3_probs.csv')
prob_4   = read.csv('rate4_probs.csv')

However, since I am not sure how many interest rates I will be dealing with to 
begin with, I have tried to call these inputs using a loop as follows.
 
In my R working directory, following files are there which are to be read as 
input..
 
 
rate1_range.csv
rate2_range.csv
rate3_range.csv
rate4_range.csv
 
rate1_probs.csv
rate2_probs.csv
rate3_probs.csv
rate4_probs.csv
 
My R Code
 
# _______________________________________________________________
 
n = no_of_Interest_Rates      # This 'n' will be suppllied separately& can be 
anything.
 
n= 4   # As mentioned, this input will be added seperately.
 
for (i in 1:n)
 
 {
 rate_[i]    = read.csv('rate[i]_range.csv')
 prob_[i]   = read.csv('rate[i]_probs.csv')
 }
 
# End of code.
 
However when I excute this code (here, n = 4), I get following error.
 
Error in file(file, "r") : cannot open the connection
In addition: Warning message:
In file(file, "r") :
  cannot open file 'rate[i]_range.csv': No such file or directory
 
Obviously as usual I have written some stupid code.
 
Please guide
 
Regards
 
Maithili
 
 
 


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