Dear Rune, Thanks a lot for your comment! I tried with "Location" as a fixed-effect and clmm() ran! It take quiet a long time but I have approximatively 67000 observations in my datatable so I guess it's quiet normal!
I want to run function Anova{car} on Modele but it gave my another error : >Anova(Modele) /Error in eval(expr, envir, enclos) : object 'RRI' not found/ any idea? Thanks again Aurore -- View this message in context: http://r.789695.n4.nabble.com/Error-clmm-ordinal-tp4691592p4691693.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.