2008/11/3 <[EMAIL PROTECTED]>: > So how do I detect the NULL at r[1]?
How can you detect what is not there? Single square brackets on a list give you a list. Double square brackets give you the elements. is.null(r[[1]]) should be TRUE. Barry ______________________________________________ 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.