Hi Elaine you can do all at one go using the ggplot2-package library(ggplot2) qplot(age,weight)+ geom_smooth(method="lm",formula=y~poly(x,2))
Have a look at ?geom_smooth when you want to incooperate customized model predictions cheers. Am 07.02.2013 02:31, schrieb Elaine Kuo: > Hello, > > I drew a plot of weight and height of people and fitted it with a > polynominal regression x^2. > (using curve()) > > Now I would like to draw the confidence interval line for the fitted curve. > Please kindly advise the code for the purpose. > Thank you. > > Elaine > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Eik Vettorazzi Department of Medical Biometry and Epidemiology University Medical Center Hamburg-Eppendorf Martinistr. 52 20246 Hamburg T ++49/40/7410-58243 F ++49/40/7410-57790 -- Pflichtangaben gemäß Gesetz über elektronische Handelsregister und Genossenschaftsregister sowie das Unternehmensregister (EHUG): Universitätsklinikum Hamburg-Eppendorf; Körperschaft des öffentlichen Rechts; Gerichtsstand: Hamburg Vorstandsmitglieder: Prof. Dr. Martin Zeitz (Vorsitzender), Dr. Alexander Kirstein, Joachim Prölß, Prof. Dr. Dr. Uwe Koch-Gromus ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
