[R] for loop in nls function

[Yuelin Li]

> results[i]<- nls(Tw ~ mu + ((alpha - mu)/(1 + exp(gamma*(B -  
> Mean_Air)))),
> 	data = dem16,
> 	start = list(mu = 0.0001, alpha = 21.8, gamma = 0.22, B = 12.8))
> 	}

If you have a variable that codes "site" then you can try something
like this to get the parameters over sites.  Pinheiro and Bates (2000)
has several examples. 

nlsList(Tw ~ mu + ((alpha - mu)/(1 + exp(gamma*(B - Mean_Air)))) | site)

Yuelin.

 
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