[EMAIL PROTECTED] wrote: > Hi - I use stepAIC to automatically select the model. The stepAIC was applied > on polr as follow:objPolr <- polr(formula=myformula, data=dat, > method=METHOD);objPolr.step <- stepAIC(objPolr, trace=T);Then R complaints > that it doesn't know about 'dat' when it executes the second line. Below is > the exact error that I got when executing the stepAIC line above:Error in > eval(expr, envir, enclos) : object "dat" not foundWould you please provide > some guide to circumvent this? Thank you.- adschai
Please read the psoting guide mentioned below each message of this list and learn to add appropriate line breaks to your messages or fix your Enter key. What is dat? Is it a data.frame in the Workspace? What R version, what version of MASS, which OS? Uwe Ligges > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch 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. ______________________________________________ R-help@stat.math.ethz.ch 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.
