Dear all The following is a very basic and beginner's question on loops.
Suppose you have data (say, 1000 cases) with two variables named "answer" (string) and "class" (numeric). The latter runs from 1 to 78 and categorizes the data. I need to create a file "answer_1.txt" for the cases with class==1, and so on, up to "answer_78.txt" I have been able to do this for one value of "class" in the following way k_1<-answer[class==1] write.table(k_1, "answer_1.txt") Now, I would like to loop over "class", replacing the occurences of "1" in the code above successively with the integers from 1 to 78, so that I get my 78 files. (equivalent to typing: k_1<-answer[class==1] write.table(k_1, "answer_1.txt") k_2<-answer[class==2] write.table(k_2, "answer_2.txt") etc.) I have tried for (i in 1:78) k_i<-answer[class==(i)] but this only generated the variable corresponding to the last value (78) of the counter i, and not the files in between. Thanks a lot for any help or pointers in the right direction. I am an R beginner and I studied the help files (they got me up to here), but I could not solve this problem on my own. Chris Kopp ______________________________________________ [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.
