Hi, I have a situation here.
I try this update: mmaa <- update(mma,biomass~qvartemp) but I have this message: Error in eval(expr, envir, enclos) : object "qvartemp" not found but this object exist: [1] "cont" "i" "levelsord" "mma" "qvar" "qvarmma" [7] "qvartemp" "test" "yvar" but if I use the glm directly it work: mmaa <- glm(biomass~qvartemp) Call: glm(formula = biomass ~ qvartemp) Deviance Residuals: Min 1Q Median 3Q Max -99.500 -57.521 6.125 40.688 221.750 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 509.25 21.73 23.434 <2e-16 *** qvartempn50 60.08 37.64 1.596 0.1225 qvartempr5 101.25 37.64 2.690 0.0123 * qvartempr10 101.42 37.64 2.694 0.0122 * .... I need to use update because other informations like family, weigths, etc Anybody have any idea about this problem in update? Thanks Ronaldo -- If it were not for the presents, an elopement would be preferable. -- George Ade, "Forty Modern Fables" -- > Prof. Ronaldo Reis Júnior | .''`. UNIMONTES/Depto. Biologia Geral/Lab. de Biologia Computacional | : :' : Campus Universitário Prof. Darcy Ribeiro, Vila Mauricéia | `. `'` CP: 126, CEP: 39401-089, Montes Claros - MG - Brasil | `- Fone: (38) 3229-8187 | [EMAIL PROTECTED] | [EMAIL PROTECTED] | http://www.ppgcb.unimontes.br/ | ICQ#: 5692561 | LinuxUser#: 205366 ______________________________________________ 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.