> On Nov 14, 2017, at 5:13 AM, Fix Ace via R-help <r-help@r-project.org> wrote: > > Dear R Community, > My data have 3 conditions and each condition has 6 replicates. I am trying to > fit my data for a linear mixed model using the lmer function from lme4 > package to find the random effects of the replicates;
Better venue for this question might be SIG-mixed-models. See the link avaialble at the bottom of every posting from rhelp: https://stat.ethz.ch/mailman/listinfo/r-help: > however, I got the error message. Here are the example codes: >> example.3=data.frame(levels=as.numeric(XXX[,c(4)]),replicate=rep(c("0","1","2","3","4","5"),3),conditions=c(rep("11",6),rep("12",6),rep("13",6)))> >> example.3 levels replicate conditions1 43.1111 0 112 >> 42.0942 1 113 57.8131 2 114 57.1726 >> 3 115 77.8678 4 116 44.7578 5 117 >> 69.5078 0 128 52.0581 1 129 40.0602 >> 2 1210 45.5487 3 1211 43.6201 4 >> 1212 60.4939 5 1213 64.1932 0 1314 53.4055 >> 1 1315 59.6701 2 1316 52.6922 3 >> 1317 53.8712 4 1318 60.2770 5 13> >> m.example.3=lmer(as.numeric(levels)~conditions+(conditions|replicate),data=example.3)Error: >> number of observations (=18) <= number of random effects (=18) for term >> (conditions | replicate); the random-effects parameters and the residual >> variance (o r scale parameter) are probably unidentifiable> > Could anyone help me figure out how to fix the issue? > Thank you very much for any inputs! > Ace > > [[alternative HTML version deleted]] Complete mess. If you haven't yet been advised to posting in plain text, then this should be your wakeup call. If you have, then why are you ignoring sensible advice? > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. David Winsemius Alameda, CA, USA 'Any technology distinguishable from magic is insufficiently advanced.' -Gehm's Corollary to Clarke's Third Law ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.