Re: [R] Problem with pairs() in nlme

From: dgmaccoon <dgmaccoon_at_wisc.edu>
Date: Fri, 08 Apr 2011 14:05:57 -0700 (PDT)

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-help_at_stat.math.ethz.ch mailing list
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

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Received on Sat 09 Apr 2011 - 03:49:43 GMT

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