[R-sig-ME] lme error message
slu at ccsr.uchicago.edu
Fri Jul 24 00:33:34 CEST 2009
On 木, 2009-07-23 at 04:17 -0400, Luca Borger wrote:
> > Singularity in backsolve at level 0, block 1
> in fact my experience is that in this case there is some problem with
> the fixed effects (e.g. not enough data for all factor combinations
> etc.), otherwise it would say level 1 or higher. By fitting a simpler
> model usually it disappears.
> Disclaimer: just limited empirical experience, I have never checked
> the code to understand better this error message, so take this with
> caution ;-)
I found the problem. One of my predictors was all 0s. (Dumb me.) Thanks
to everyone for the help.
Stuart Luppescu -=-=- slu <AT> ccsr <DOT> uchicago <DOT> edu
CCSR at U of C ,.;-*^*-;., ccsr.uchicago.edu
[Crash programs] fail because they are based on the theory that,
with nine women pregnant, you can get a baby a month.
-- Wernher von Braun
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