On 11-05-24 6:00 AM, Alaios wrote:
Dear all, I would like to do read a bunch of files that have the following formatfile_i_j examples: file_1_1 file_1_2 file_1_3 file_2_1 file_2_2 file_3_1 file_3_2 file_3_3 file_3_4 file_4_1 file_4_2 The integer i goes from 1 to 100 and the integer j starts from 1 and stops somewhere between 1 and 100, which I do not know in advance Usually I would be able to solve this by having a nested loop (algorithmic syntax below, not sure if is R okay) for i in (c(1:100)) for j in (c(1:100)) store[i,j]<- read file_i_j end end the problem with that is that R will halt when j take a value that refers to a non existing value. Thus I want to have a good way to break the nested loop and continue with the outer one. How I can do that?
Use a while() loop, or use break. You can test for the existence of a file using the file.exists() function.
Duncan Murdoch ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
