hi guys, How do you check if variable is initialized/created, tried :
is.nan(xxx) is.null(xxx) is.na(xxx) exists(xxx) all of them return : Error: object "xxx" not found I need true/false result ? thanx ______________________________________________ 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.
