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 )