Thank you Michael,
Another new and useful function for me. In brief, str() gave me: $ Aeventexhumed: chr "A" "A" "A" "A" ... $ Aeventexhumed: Factor w/ 4 levels "","A","B","C": 2 2 2 2 2 2 2 2 2 2 ... I think on the data sheet there are two columns for Aeventexhumed and only one of them was converted to a factor. Factor is correct so as you suggested I will just leave it. Thanks! Jean -- View this message in context: http://r.789695.n4.nabble.com/warning-in-summary-aov-tp4645253p4645376.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.
