Apr 08, 2011; 11:05pm dgmaccon wrote: >> I get the same error: >> Error in function (classes, fdef, mtable) : >> unable to find an inherited method for function "lmList", for signature >> "formula", "nfnGroupedData"
I get no such error. You need to provide more information (platform &c.) ## library(nlme) OrthoFem<-Orthodont[Orthodont$Sex=="Female",] fm1OrthF.lis<-lmList( distance ~ age,data = OrthoFem) > fm1OrthF.lis Call: Model: distance ~ age | Subject Data: OrthoFem Coefficients: (Intercept) age F10 13.55 0.450 F09 18.10 0.275 F06 17.00 0.375 F01 17.25 0.375 F05 19.60 0.275 F07 16.95 0.550 F02 14.20 0.800 F08 21.45 0.175 F03 14.40 0.850 F04 19.65 0.475 F11 18.95 0.675 Degrees of freedom: 44 total; 22 residual Residual standard error: 0.6682746 Regards, Mark. > sessionInfo() R version 2.13.0 Under development (unstable) (2011-03-15 r54806) Platform: i386-pc-mingw32/i386 (32-bit) locale: [1] LC_COLLATE=English_South Africa.1252 LC_CTYPE=English_South Africa.1252 [3] LC_MONETARY=English_South Africa.1252 LC_NUMERIC=C [5] LC_TIME=English_South Africa.1252 attached base packages: [1] grid splines stats graphics grDevices utils datasets methods base other attached packages: [1] nlme_3.1-100 lattice_0.19-17 rms_3.3-0 Hmisc_3.8-3 survival_2.36-5 loaded via a namespace (and not attached): [1] cluster_1.13.3 effects_2.0-12 tools_2.13.0 -- View this message in context: http://r.789695.n4.nabble.com/R-Problem-with-pairs-in-nlme-tp813548p3438266.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.