formula.nls {nls} | R Documentation |
Extract Model Formula from nls Object
Description
Returns the model used to fit object
.
Usage
## S3 method for class 'nls'
formula(x, ...)
Arguments
x |
an object inheriting from class |
... |
further arguments passed to or from other methods. |
Value
a formula representing the model used to obtain object
.
Author(s)
Jose Pinheiro and Douglas Bates
See Also
nls
, formula
Examples
data(Orange)
fm1 <- nls(circumference ~ A/(1+exp((B-age)/C)), Orange,
start = list(A=160, B=700, C = 350))
formula(fm1)