[R] nls, controling the max. number of iterations; was: (no subject)

[Uwe Ligges]

Please read the posting guide and use a sensible subject line, tell us 
about the R version you are using, and add a *reproducible* example.

We get:

Error in nls(npe ~ SSgompertz(npo, Asym, b2, b3), data = f, control = 
nls.control(maxiter = 500)) :
   object 'f' not found

Best,
Uwe Ligges


On 04.01.2013 15:52, Karine HEERAH wrote:
> Hi,
>
> I am using the nls function and it stops because the number of iterations
> exceeded 50, but i used the nls.control argument to allow for 500
> iterations. Do you have any idea why it's not working?
>
> fm1 <- nls(npe ~ SSgompertz(npo, Asym, b2, b3),
> data=f,control=nls.control(maxiter=500))
>
> Error in nls(y ~ exp(-b2 * b3^x), data = xy, algorithm = "plinear", start =
> c(b2 = pars[["b1"]],  :
>    number of iterations exceeded maximum of 50
>
> Thanks for your help,
> Cheers,
> Karine.
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.