Would someone tell me how they propose to go from "standard errors" to confidence intervals*. I suspect Doug Bates would probably like to know, also, as he has expended a lot of effort on this over the years, I believe. :-)
-- Bert * Note +/- 2 std errors is almost certainly not the right answer -- how far wrong it is ... that's the question. Cheers, Bert On Mon, Aug 8, 2011 at 1:07 PM, Dennis Murphy <djmu...@gmail.com> wrote: > Hi: > > On Mon, Aug 8, 2011 at 10:07 AM, bjmjarrett <bjmjarr...@gmail.com> wrote: >> Hi all, >> >> I’m trying to plot confidence intervals for the fitted values I get with my >> lme model in R. > > Which fitted values? The ones conditional on the random effects or the > ones averaged over the random effects? The standard errors of the two > sets of predictions are not the same. >> >> Is there any way I can plot this in the form of a shaded band, like the >> output of geom_smooth() in ggplot2 package. ggplot2 seems to use only lm, >> glm, gam, loess and rlm as smoothing methods. > > You can fake it with geom_ribbon(), but it would be convenient to have > the endpoints of the CIs in a data frame you could input into ggplot2. > > HTH, > Dennis >> >> Any advice on the functions I should use to accomplish this will be very >> helpful. >> >> Thank you very much. >> >> Ben >> >> -- >> View this message in context: >> http://r.789695.n4.nabble.com/confidence-interval-as-shaded-band-lme-tp3727645p3727645.html >> Sent from the R help mailing list archive at Nabble.com. >> >> ______________________________________________ >> 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. >> > > ______________________________________________ > 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. > -- "Men by nature long to get on to the ultimate truths, and will often be impatient with elementary studies or fight shy of them. If it were possible to reach the ultimate truths without the elementary studies usually prefixed to them, these would not be preparatory studies but superfluous diversions." -- Maimonides (1135-1204) Bert Gunter Genentech Nonclinical Biostatistics ______________________________________________ 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.
