Dear Brigit, My guess is that you forgot to specify the argument family=binomial in the call to glm().
Had you included the commands that you used as well as the error that was produced, it wouldn't be necessary to guess. I hope this helps, John On Mon, 21 Apr 2008 14:23:13 +0200 Birgit Lemcke <[EMAIL PROTECTED]> wrote: > R version 2.6.2 PowerBook G4 > > Hello R User, > > I try to perform an ANCOVA using the glm function. > I have a dataset with continuous and categorical data (explanatory > variables) and my response variable is also binary categorical. > > Fehler: NA/NaN/Inf in externem Funktionsaufruf (arg 4) > Zusätzlich: Warning messages: > 1: In Ops.factor(y, mu) : - nicht sinnvoll für Faktoren (makes no > sense for factors) > 2: In Ops.factor(eta, offset) : - nicht sinnvoll für Faktoren > 3: In Ops.factor(y, mu) : - nicht sinnvoll für Faktoren > > My dataset contains NA`s but if I try to use na.exclude, I got the > same Error message. > > I thought the function should use with my dataset. What am I doing > wrong? > > Thanks in advance for your help. > > Birgit > > > Birgit Lemcke > Institut für Systematische Botanik > Zollikerstrasse 107 > CH-8008 Zürich > Switzerland > Ph: +41 (0)44 634 8351 > [EMAIL PROTECTED] > > 175 Jahre UZH > «staunen.erleben.begreifen. Naturwissenschaft zum Anfassen.» > MNF-Jubiläumsevent für gross und klein. > 19. April 2008, 10.00 Uhr bis 02.00 Uhr > Campus Irchel, Winterthurerstrasse 190, 8057 Zürich > Weitere Informationen http://www.175jahre.uzh.ch/naturwissenschaft > > ______________________________________________ > [email protected] 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. -------------------------------- John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario, Canada http://socserv.mcmaster.ca/jfox/ ______________________________________________ [email protected] 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.
