NLSstAsymptotic
Fit the Asymptotic Regression Model
Description
Fits the asymptotic regression model, in the form b0 + b1*(1-exp(-exp(lrc) * x)), to the xy data.
Usage
NLSstAsymptotic(xy)
Arguments
| xy |
a sortedXyData object.
|
Value
returns a length-3 numeric value with the following components.
|
b0 | represents the estimated intercept on the y-axis. |
|
b1 | represents the estimated difference between the asymptote and the y-intercept. |
|
lrc | represents the estimated logarithm of the rate constant.
|
See Also
Examples
xy <- sortedXyData(expression(age), expression(height), Sdatasets::Loblolly)
NLSstAsymptotic(xy)
# b0 b1 lrc
# -8.533061 110.795138 -3.246130