| % File src/library/stats/man/case.names.Rd |
| % Part of the R package, https://www.R-project.org |
| % Copyright 1995-2011 R Core Team |
| % Distributed under GPL 2 or later |
| |
| \name{case+variable.names} |
| \alias{case.names} |
| \alias{case.names.lm} |
| \alias{variable.names} |
| \alias{variable.names.lm} |
| \title{Case and Variable Names of Fitted Models} |
| \description{ |
| Simple utilities returning (non-missing) case names, and |
| (non-eliminated) variable names. |
| } |
| \usage{ |
| case.names(object, \dots) |
| \method{case.names}{lm}(object, full = FALSE, \dots) |
| |
| variable.names(object, \dots) |
| \method{variable.names}{lm}(object, full = FALSE, \dots) |
| } |
| \arguments{ |
| \item{object}{an \R object, typically a fitted model.} |
| \item{full}{logical; if \code{TRUE}, all names (including zero weights, |
| \dots) are returned.} |
| \item{\dots}{further arguments passed to or from other methods.} |
| } |
| \value{ |
| A character vector. |
| } |
| \seealso{\code{\link{lm}}; further, \code{\link{all.names}}, |
| \code{\link{all.vars}} for functions with a similar name but only slightly |
| related purpose. |
| } |
| \examples{ |
| x <- 1:20 |
| y <- setNames(x + (x/4 - 2)^3 + rnorm(20, sd = 3), |
| paste("O", x, sep = ".")) |
| ww <- rep(1, 20); ww[13] <- 0 |
| summary(lmxy <- lm(y ~ x + I(x^2)+I(x^3) + I((x-10)^2), weights = ww), |
| correlation = TRUE) |
| variable.names(lmxy) |
| variable.names(lmxy, full = TRUE) # includes the last |
| case.names(lmxy) |
| case.names(lmxy, full = TRUE) # includes the 0-weight case |
| } |
| \keyword{regression} |
| \keyword{models} |