NLSstClosestX
Inverse Interpolation

### Description

Uses inverse linear interpolation to approximate the x value at which the function represented by xy is equal to yval.

### Usage

    # Generic function
    NLSstClosestX(xy, yval)
    ## S3 method for class 'sortedXyData':
    NLSstClosestX(xy, yval)

### Arguments

xy | a sortedXyData object.
yval | the numeric value on the y scale to get close to.

Value
returns a single numeric value on the x scale.
Note
NLSstClosestX() is generic and has only one non-visible method for class "sortedXyData".
See Also
sortedXyData
Examples

    DNase.2 <- Sdatasets::DNase[ Sdatasets::DNase$Run == "2", ]
    DN.srt <- sortedXyData( expression(log(conc)), expression(density), DNase.2 )
    NLSstClosestX( DN.srt, 1.0 )

Package stats version 6.1.5-18
Package Index