sessionInfo()
R version 2.13.0 (2011-04-13)
Platform: i386-pc-mingw32/i386 (32-bit)
locale:
[1] LC_COLLATE=Spanish_Spain.1252 LC_CTYPE=Spanish_Spain.1252
[3] LC_MONETARY=Spanish_Spain.1252 LC_NUMERIC=C
[5] LC_TIME=Spanish_Spain.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] lme4_0.999375-39 Matrix_0.999375-50 lattice_0.19-23 nlme_3.1-100
[5] MASS_7.3-12
loaded via a namespace (and not attached):
[1] grid_2.13.0 stats4_2.13.0
str(inslarge)
chr [1:31] "1,107710913" "1,107710913" "0,97850759" "1,800528121" ...
str(tlengthcoef)
chr [1:31] "0,010580151" "0,021636091" "0,004123072" "0,10487174" ...
Thank you very much.
Iker
________________________________
De: Douglas Bates
CC: r-sig-mixed-models@r-project.org
Enviado: mié,8 junio, 2011 18:14
Asunto: Re: [R-sig-ME] Variable () converted to a factor
Could you please send us the output from
library(lme4)
sessionInfo()
# whatever you do to attach your data
str(inslarge)
str('tlengthcoef)
ote:
>
> Hello, list:
>
> I am trying to implement a model with lmer. The dependent variable is
> different insect abundances for different sites, and the explanatory variables
> are several coefficients of variation for the intensity of different sexual
> signals shown by swallows nesting in those sites. Measures were taken in two
> different years, so I included "year" as a random factor. As I was getting an
> error message, I decided to simplify the amalysis just to check were the
>problem
> could be. Still with the simplest possible analysis:
>
> insectmodel2<-lmer(inslarge~tlengthcoef+(1|year))
>
> I still get this message (sorry some parts are in Spanish, I don't know how
> to change that):
>
> Mensajes de aviso perdidos
> 1: In model.matrix.default(mt, mf, contrasts) :
> variable 'inslarge' converted to a factor
> 2: In model.matrix.default(mt, mf, contrasts) :
> variable 'tlengthcoef' converted to a factor
> 3: In function (fr, FL, start, REML, verbose) :
> NAs introducidos por coerción (NAs introduced by coercion
>
> It's funny that it converts my variables to factors when I've been
struggling
> for that not to happen when attaching the data set.
> Anyone can help me explain and deal with this problem? Thank you very much!
>
> Iker
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>
>
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>
>
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