NLSstClosestX {stats} | R Documentation |
Use inverse linear interpolation to approximate the x
value at
which the function represented by xy
is equal to yval
.
NLSstClosestX(xy, yval)
xy |
a sortedXyData object |
yval |
a numeric value on the y scale |
A single numeric value on the x
scale.
Jose Pinheiro and Douglas Bates
sortedXyData
, NLSstLfAsymptote
,
NLSstRtAsymptote
, selfStart
DNase.2 <- DNase[ DNase$Run == "2", ] DN.srt <- sortedXyData( expression(log(conc)), expression(density), DNase.2 ) NLSstClosestX( DN.srt, 1.0 )