I have a complicated nonlinear function, myfun(a,b,c),
that I want to fit to data, allowing one or more of the parameters
a, b, and c in turn to have linear dependence on other covariates.
In other words, I'd like to specify something like
nls(y~myfun(a,b,c),linear=list(a~f1,b~1,c~1))
I
Hi,
the contributed package 'drc' allows specification of non-linear regression
models with
individual parameter models that include covariates.
For an example see section 8 the accompanying paper in J. Statist. Software
(http://www.jstatsoft.org/v12/i05/v12i05.pdf).
Christian
