Dear R Help, I have a set of data of heights of trees described by area that they are in. The areas are numerical (0 to 7).
ht area 1 320 3 2 410 4 3 230 2 4 360 3 5 126 1 6 280 2 7 260 2 8 280 2 9 280 2 10 260 2 ....... 180 450 4 181 90 1 182 120 1 183 440 4 184 210 2 185 330 3 186 210 2 187 100 1 188 0 0 I want to convert the area column values to factors, to do an anova. However, if I use: df$areaf <- factor(df$area, labels=c("0","I","II","III","IV","V","VI","VII")) it gives the following message: Error in factor(df$area, labels = c("0", "I", "II", "III", "IV", "V", "VI", : invalid labels; length 8 should be 1 or 7 Can anyone help? Jabez ___________________________________________________________ now. [[alternative HTML version deleted]] ______________________________________________ R-help@stat.math.ethz.ch 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.