It's about formula syntax, so ?formula documents it. Bert
On Monday, May 23, 2016, John Sorkin <[email protected]> wrote: > > The syntax > mydat <- data.frame( y,x ) > fit1 <- lm( y~., data=mydat ) > appears to perform a multivariable regression of y on every non-y variable > in the data frame mydat. I can not find this syntax (y~.) in R > documentation. Is y~. a supported feature of the R language? Where can I > find it documented? I would hate to write code that is dependent on a > non-supported, non-documented language feature. > Thank you, > John > John David Sorkin M.D., Ph.D. > Professor of Medicine > Chief, Biostatistics and Informatics > University of Maryland School of Medicine Division of Gerontology and > Geriatric Medicine > Baltimore VA Medical Center > 10 North Greene Street > GRECC (BT/18/GR) > Baltimore, MD 21201-1524 > (Phone) 410-605-7119 > (Fax) 410-605-7913 (Please call phone number above prior to faxing) > > Confidentiality Statement: > This email message, including any attachments, is for ...{{dropped:25}} ______________________________________________ [email protected] mailing list -- To UNSUBSCRIBE and more, see 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.
