[R] starting values update

Uwe Ligges ligges at statistik.tu-dortmund.de
Sat Dec 27 17:35:01 CET 2008



Peter Dalgaard wrote:
> Uwe Ligges wrote:
>>
>>
>> Nadine Mugusa wrote:
>>> Hi all,
>>> does anyone know how to automatically update starting values in R?
>>
>> See ?set.seed
> 
> Off target, Uwe. 


Right, thanks and apologies, haven't read carefully enough....

Uwe


> This was about starting values for a nonlinear fit. 
> More likely something about self-starting models is relevant here. 
> There's a chapter in the 2nd edition of my book, but it doesn't quite go 
> all the way to writing your own self-starting models. There's a brief 
> outline and an example in some oldish course slides here:
> 
> http://staff.pubhealth.ku.dk/~pd/pkpd2003/nls.pdf
> 
> (And please don't quote entire digests back to the list. It is 
> potentially explosive...)
> 
> -p
> 
>>
>> Uwe Ligges
>>
>>
>>> I' m fitting multiple nonlinear models and would like to know how I 
>>> can update starting values without having to type them in.
>>> thank all
>>>
>



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