On 2010-06-14 13:25, Moimt wrote:
HI, I am a new user of R and want to analyse some data using npmc. My data have several levels of factor (Site, Year and Season) and several variable (Percentages). I have tried to use npmc but I always get an error message. My data are in a table following this example: Site YEar Season Var1 Var2 .... A 2009 Dry 10 56 B ........ here is the error message I get: Erreur dans as.vector(x, mode) : argument 'mode' incorrect. How should I use the npmc formula? Thank you for your help
What do you mean by "data are in a table"? Is this a data.frame (as required by npmc)? I think that npmc can only handle one numerical and one categorical variable and they must be named "var" and "class". -Peter Ehlers ______________________________________________ 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.
