NLSstRtAsymptote: Horizontal Asymptote on the Right Side

NLSstRtAsymptoteR Documentation

Horizontal Asymptote on the Right Side

Description

Provide an initial guess at the horizontal asymptote on the right side (i.e., large values of x) of the graph of y versus x from the xy object. Primarily used within initial functions for self-starting nonlinear regression models.

Usage

NLSstRtAsymptote(xy)

Arguments

xy

a sortedXyData object

Value

A single numeric value estimating the horizontal asymptote for large x.

Author(s)

José Pinheiro and Douglas Bates

See Also

sortedXyData, NLSstClosestX, NLSstRtAsymptote, selfStart

Examples

DNase.2 <- DNase[ DNase$Run == "2", ]
DN.srt <- sortedXyData( expression(log(conc)), expression(density), DNase.2 )
NLSstRtAsymptote( DN.srt )