[RsR] Robust nonlinear regression in R

[kh@@x131 m@iii@g oii um@@edu]

Thanks to all, I looked into the nonlinear regression fitting function 
"nlrob()" available in R. the problem with it is that unless i don't get 
start with good starting values close to the actual one's it does not work. 
Is there any pointers how to choose good starting values-?

Thanks,
Dost.


On Sep 26 2008, Tobias Verbeke wrote:

>From the Robust Statistical Methods Task View on CRAN
>at
>
>http://cran.r-project.org/web/views/Robust.html
>
>
> " Robust Nonlinear model fitting is available through robustbase 's 
> nlrob()."
>
>install.packages("robustbase")
>library(robustbase)
>?nlrob
>
>HTH,
>Tobias
>
>> I would like to know about robust nonlinear regression R code as well.
>>
>> Arny
>>
>>
>> Arnold J. Stromberg
>> Professor and Chair
>> Department of Statistics
>> University of Kentucky
>> 817 Patterson Office Tower
>> Lexington, KY 40506-0027
>> Phone: 859-257-6115
>> Fax: 859-323-1973
>>
>>
>> -----Original Message----- From: r-sig-robust-bounces using r-project.org 
>> [mailto:r-sig-robust-bounces using r-project.org] On Behalf Of 
>> khanx131 using umn.edu Sent: Thursday, September 25, 2008 6:50 PM To: 
>> r-sig-robust using r-project.org Subject: [RsR] Robust nonlinear regression in 
>> R
>>
>> Hi dear linsters,
>>
>> I am starting work on a robust nonlinear regression project. Is there any
>> code, stuff in R for robust estimation of nonlinear regression functions.
>> any comments,material help, suggestions would be greatly appreciated.
>> thanks in advance,
>>
>> Dost.
>>
>> _______________________________________________
>> R-SIG-Robust using r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-sig-robust
>>
>> _______________________________________________
>> R-SIG-Robust using r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-sig-robust
>>
>>
>
>
>