probably you want to look at the help page of ?contr.treatment I hope it helps.
Best, Dimitris ---- Dimitris Rizopoulos Ph.D. Student Biostatistical Centre School of Public Health Catholic University of Leuven Address: Kapucijnenvoer 35, Leuven, Belgium Tel: +32/(0)16/336899 Fax: +32/(0)16/337015 Web: http://med.kuleuven.be/biostat/ http://www.student.kuleuven.be/~m0390867/dimitris.htm Quoting Justin Rapp <[EMAIL PROTECTED]>: > When I run a linear regression and include a variable in the > regression with as.factor i.e. > > lm(y ~x +as.factor(x1) > > and i read the output as > as.factor(x1)1.... > as.factor(x1)2... > etc. > > how do i interpret the estimate for each level? Is this simply to > be > regarded as a shift in the equation predicted by the intercept and > independent variable x? > > jdr > > > -- > Justin Rapp > 409 S. 22nd St. > Apt. 1 > Philadelphia, PA 19146 > Cell:(267)252.0297 > > ______________________________________________ > [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 > > Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm ______________________________________________ [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
