[R] Fitting data to a sigmoidal curve

[Rolf Turner]

On 13/11/2008, at 7:50 AM, sarahkm wrote:

>
> Hi-
> I'm a biologist trying to figure out the growth rate of salamanders in
> different ponds. I collected individuals from various populations at
> different dates, and using the size and date collected, I want to  
> figure out
> the growth curve of each population. My question is: How do I fit  
> my data to
> a Gompertz function in R?

?nls

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