| % File src/library/stats/man/NLSstRtAsymptote.Rd |
| % Part of the R package, https://www.R-project.org |
| % Copyright 1995-2010 R Core Team |
| % Distributed under GPL 2 or later |
| |
| \name{NLSstRtAsymptote} |
| \encoding{UTF-8} |
| \title{Horizontal Asymptote on the Right Side} |
| \alias{NLSstRtAsymptote} |
| \alias{NLSstRtAsymptote.sortedXyData} |
| \description{ |
| Provide an initial guess at the horizontal asymptote on the right side |
| (i.e., large values of \code{x}) of the graph of \code{y} versus |
| \code{x} from the \code{xy} object. Primarily used within |
| \code{initial} functions for self-starting nonlinear regression |
| models. |
| } |
| \usage{ |
| NLSstRtAsymptote(xy) |
| } |
| \arguments{ |
| \item{xy}{a \code{sortedXyData} object} |
| } |
| \value{ |
| A single numeric value estimating the horizontal asymptote for large |
| \code{x}. |
| } |
| \author{\enc{José}{Jose} Pinheiro and Douglas Bates} |
| \seealso{ |
| \code{\link{sortedXyData}}, |
| \code{\link{NLSstClosestX}}, |
| \code{\link{NLSstRtAsymptote}}, |
| \code{\link{selfStart}} |
| } |
| \examples{ |
| DNase.2 <- DNase[ DNase$Run == "2", ] |
| DN.srt <- sortedXyData( expression(log(conc)), expression(density), DNase.2 ) |
| NLSstRtAsymptote( DN.srt ) |
| } |
| \keyword{manip} |