Are you certain they are numeric? Have you tried str() on your data? Sarah
On Fri, Jan 14, 2011 at 9:08 AM, Silvano <silv...@uel.br> wrote: > Hi, > > I used subset command, like this: > > grupoP = subset(dados, grupos=='P', select=c(mortos, vivos, doses, > percevejos, p)) > > and the variables in select option are numeric. > > I tried fit a model with command: > > ajuste.logit = glm(cbind(mortos,percevejos)~log10(doses), > family=binomial(logit), data=grupoP) > > and the output is: > >> ajuste.logit = glm(cbind(mortos,percevejos)~log10(doses), >> family=binomial(logit), data=grupoP) > > Erro em Math.factor(doses) : log10 not meaningful for factors > > what is wrong with my commands? Why doses aren't numeric? > > Thanks, > -- Sarah Goslee http://www.functionaldiversity.org ______________________________________________ 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.
