Hello All, I've sent a few messages to the list regarding splitting a formula into its right and left hand terms. Thanks to everyone who has responded.
I believe that the best way to extract the left and right hand terms as character vectors follows: library(nlme) formula <- y ~ x + z left.term <- all.vars(getResponseFormula(formula)) covariates <- all.vars(getCovariateFormula(formula)) Thanks! Dan Gerlanc Williams College ______________________________________________ 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.
