This response went to my email: Without your data it's hard to say, but one possibility is that your plots are nested within treatments instead of crossed, or that you have something rather more cunning going on involving the Days. For example if you had 8 days for six of your plots and another 8 days for the remaining 6 plots, you may find that the total degrees of freedom aren't quite what you expected, as those subgroups need an intercept each. (I had this for a replicated latin square design - but I have to say that my problem then was that lm() gavbe me too many df and an apparently unbalanced design - I had to add the superset factor manually to get it right)
Another possibility is that one of your plots has no data; try table(Combined.Plot) to check. -- View this message in context: http://r.789695.n4.nabble.com/ANOVA-1-too-few-degrees-of-freedom-tp3493349p3496870.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.
