Hello, I wish to perform a substitution of certain numerical values in a data matrix with the corresponding column name. For instance, if I have a data matrix V1 V2 V3 2 0 1 0 1 2 1 5 0 5 0 0
I want to substitute the `1' and the `2' for the corresponding column name, and make everything else `NA' like this V1 V2 V3 V1 NA V3 NA V2 V3 V1 NA NA NA NA NA I have done this using an explicit `for' loop, but it takes a really long time to finish. Is there any way I can do this using `apply' or some form of implicit looping? Thank you for your help, SO -- View this message in context: http://www.nabble.com/Substituting-numerical-values-using-%60apply%27-tp24398687p24398687.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org 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.
