[R] Plotting the regression curve with its confidence interval

[Jim Lemon]

On 11/11/2012 04:36 PM, Осипов Денис wrote:
> Hello.
>
> How can I plot the regression curve with its confidence interval?
> I use nls(y~a*x^b), then plot(x,y), add curve with lines(x,predict(nls(y~a*x^b))). But I can't add to plot CI for my curve.
>
Hi Denis,
If you know where you want the lines for the CI the dispersion function 
in the plotrix package will do what you want, use the type=l and 
border=1 arguments with fill=NA.

Jim