Re: [R] nlrob and robust nonlinear regression with upper and/or lower bounds on parameters

2013-03-15 Thread Peter Ehlers
Forgot to mention: You might find the nlmrt package helpful but I have no experience with that (yet). Peter Ehlers On 2013-03-15 07:57, Shane McMahon wrote: I have a question regarding robust nonlinear regression with nlrob. I would like to place lower bounds on the parameters, but when I call

Re: [R] nlrob and robust nonlinear regression with upper and/or lower bounds on parameters

2013-03-15 Thread Peter Ehlers
On 2013-03-15 07:57, Shane McMahon wrote: I have a question regarding robust nonlinear regression with nlrob. I would like to place lower bounds on the parameters, but when I call nlrob with limits it returns the following error: "Error in psi(resid/Scale, ...) : unused argument(s) (lower = list

[R] nlrob and robust nonlinear regression with upper and/or lower bounds on parameters

2013-03-15 Thread Shane McMahon
I have a question regarding robust nonlinear regression with nlrob. I would like to place lower bounds on the parameters, but when I call nlrob with limits it returns the following error: "Error in psi(resid/Scale, ...) : unused argument(s) (lower = list(Asym = 1, mid = 1, scal = 1))" After