| % File src/library/stats/man/formula.nls.Rd |
| % Part of the R package, https://www.R-project.org |
| % Copyright 1995-2010 R Core Team |
| % Distributed under GPL 2 or later |
| |
| \name{formula.nls} |
| \encoding{UTF-8} |
| \alias{formula.nls} |
| \title{Extract Model Formula from nls Object} |
| \usage{ |
| \method{formula}{nls}(x, \dots) |
| } |
| \arguments{ |
| \item{x}{an object inheriting from class \code{"nls"}, representing |
| a nonlinear least squares fit.} |
| \item{\dots}{further arguments passed to or from other methods.} |
| } |
| \description{ |
| Returns the model used to fit \code{object}. |
| } |
| \value{ |
| a formula representing the model used to obtain \code{object}. |
| } |
| \author{\enc{José}{Jose} Pinheiro and Douglas Bates} |
| \seealso{\code{\link{nls}}, \code{\link{formula}}} |
| \examples{ |
| fm1 <- nls(circumference ~ A/(1+exp((B-age)/C)), Orange, |
| start = list(A = 160, B = 700, C = 350)) |
| formula(fm1) |
| } |
| \keyword{models} |