[R] plotting confidence bands from predict.nls

[Laurent Rhelp]

Le 07/05/2011 06:17, Penny Bilton a écrit :
> I am trying to find a confidence band for a fitted non-linear curve. I 
> see that the predict.nls function has an interval argument, but a 
> previous post indicates that this argument has not been implemented.  
> Is this still true? I have tried various ways to extract the interval 
> information from the model object without success. My code is:
>
> Model.predict <-  predict(My.nls.model,  se.fit=TRUE,  interval = 
> "confidence",  level = 0.95)   ,
>
> where My.nls.model is an nls object, I was able to extract the 
> predictions okay.
>
>
> Thank you for your help.
> Penny.
>
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You can use the bootstrap methodology using the predicted values 
assessed through the N replications.