[R-sig-ME] lme4_0.999375-1: not clear what works and what doesn't

Michael Kubovy kubovy at virginia.edu
Thu Jan 24 03:59:47 CET 2008

Dear Mixed modelers,

I realize that the package is in transition; I see that some examples  
have a comment #not run, which I take to mean "won't run for  
now" (e.g., mcmcsamp() ).

But I'm confused about some functions that don't work:

What seems not to work:

1. simulate() "Error: 'simulate' is not implemented yet";

2. The examples in lme4::lmer that call nlmer() all say "Warning  
message: In mer_finalize(ans, verbose) : false convergence (8)"

3. plot(fm2 <- lmer(Reaction ~ Days + (1|Subject) + (0+Days|Subject),  
data = sleepstudy)))
complains: "Error in as.double(y) : cannot coerce to vector"

R version 2.6.1 (2007-11-26)


attached base packages:
[1] datasets  grDevices graphics  stats     utils     methods   base

other attached packages:
  [1] foreign_0.8-23    car_1.2-7         arm_1.1-1          
R2WinBUGS_2.1-7   MASS_7.2-39
  [6] coda_0.13-1       lme4_0.999375-1   Matrix_0.999375-4  
lattice_0.17-4    JGR_1.5-8
[11] iplots_1.1-1      JavaGD_0.4-3      rJava_0.5-1

loaded via a namespace (and not attached):
[1] grid_2.6.1  tools_2.6.1

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/

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