The age of this post makes me hope there is an easy response from someone. When I do the following with Orthodont built-in dataset:
library(nlme) OrthoFem<-Orthodont[Orthodont$Sex=="Female",] fm1OrthF.lis<-lmList( distance ~ age,data = OrthoFem) I get the same error: Error in function (classes, fdef, mtable) : unable to find an inherited method for function "lmList", for signature "formula", "nfnGroupedData" Since this is straight out of Pinheio & Bates book and the same thing happens when I use the example posted with ?lmList, I have no idea what to do. Thank you. Michael Kubovy wrote: > > Dear r-helpers, > > After successfully running > require(nlme) > vfr.lmL <- lmList( > estimate ~ (slant + respType + visField + hand)^2 | subject, vfr > ) > > pairs(vfr.lmL, id = 0.01, adj = -0.5) # Pinheiro & Bates (p. 141) > produces the following error: > Error in sprintf(gettext(fmt, domain = domain), ...) : > object "form" not found > > Any guesses as to what I may have done wrong? > > vfr is not a grouped object because: > > vfrg <- groupedData(estimate ~ slant | subject, data = vfr) > vfrg.lmL <- lmList( > estimate ~ (slant + respType + visField + hand)^2 | subject, > vfrg) > Error in function (classes, fdef, mtable) : > unable to find an inherited method for function "lmList", for > signature "formula", "nfnGroupedData" > > The data are at > http://www.people.virginia.edu/~mk9y/LongFormat.csv > > To get the working data.frame: > vf <- read.table("http://www.people.virginia.edu/~mk9y/ > LongFormat.csv", header = TRUE, sep=',') > names(vf) <- c( > 'slant', 'estimate', 'respType', 'visField', 'hand', > 'order', 'sex', 'subject', 'handPref' > ) > require(reshape) > vf <- sort_df(vf, vars = 'slant') > vf$subject <- factor(vf$subject) > summary(vf) > vfr <- subset(vf, handPref == 'R', select = -handPref) > vfr <- subset(vfr, slant %in% c(10, 20, 30)) > > _____________________________ > Professor Michael Kubovy > University of Virginia > Department of Psychology > USPS: P.O.Box 400400 Charlottesville, VA 22904-4400 > Parcels: Room 102 Gilmer Hall > McCormick Road Charlottesville, VA 22903 > Office: B011 +1-434-982-4729 > Lab: B019 +1-434-982-4751 > Fax: +1-434-982-4766 > WWW: http://www.people.virginia.edu/~mk9y/ > > ______________________________________________ > r-h...@stat.math.ethz.ch 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. > -- View this message in context: http://r.789695.n4.nabble.com/R-Problem-with-pairs-in-nlme-tp813548p3437439.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.
