Your model formula cannot be correct. The phrase Error(block/plot, data = track)
is wrong. It has to be something like this Error(block/plot), data = track The Error function requires a well-defined formula. The "," character cannot be inside the Error function. You misunderstood my use of sapply. I am illustrating the number of levels for each of the factors. That is information about the data.frame. It is not part of a model specification. I need reproducible code to do anything further. I need exactly three complete statements of the form track <- structure(....) ## from your earlier email mymodel <- aov( formula + Error(errorformula), data=track) summary(mymodel) Do not attach() anything. I am wondering now if that use of the attach() function in early email was part of your difficulty. When you have those three statements ready, open a fresh copy of R with the MSDOS command statement c:\progra~1\R\R-2.9.1\bin\Rgui --vanilla Then paste the three statements in. If that works, send the three statements. ______________________________________________ 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.
