Dear All, I was trying to use the lmList function to get the lmList graphic but have a problem creating the graphic. My data has missing values and an error occurred as stated below.
################################################### library(nlme) > a schoolid spring score childid 1 1 0 550 345 2 1 1 568 345 3 1 0 560 456 4 1 1 NA 456 5 2 0 540 32 6 2 1 562 32 7 2 0 579 34 8 2 1 599 34 (lmlis1 <- lmList(score ~ childid | spring, data=a, na.action=T)) Error in UseMethod("getGroups") : no applicable method for "getGroups" ####################################################### Could anybody advice me the way to write the command correctly, which ignore the missing data? Cheers Fir ______________________________________________ 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.