[R] lmer

[Uwe Ligges]

David Barron wrote:

> Since the recent update to package lme4, I now get an error when trying to
> print the results using lmer to obtain model estimates for anything other
> than a liner mixed model.  For example, 
> 
> (fm1 <- lmer(decrease ~ treatment + (1|rowpos) +
> (1|colpos),family=poisson(),
>              data=OrchardSprays))
> 
> Produces the error:
> 
> Error in checkSlotAssignment(object, name, value) : 
>         Assignment of an object of class "NULL" is not valid for slot
> "frame" in an object of class "summary.lmer"; is(value, "data.frame") is not
> TRUE
> Error in show(new("summary.lmer", object, useScale = TRUE, showCorrelation =
> FALSE)) : 
>         Unable to find the argument "object" in selecting a method for
> function "show"


Yes, the recent version has also some inconsistancy with the mlmRev 
package, perhaps a bug .... Doug Bates certainly knows better.

Version 0.95-1 has not had this problem (but others, I think).
If you want to "downgrade" for the meantime,
check out CRAN/bin/windows/contrib/2.0/last/
with "old" versions of Matrix, lme4 and friends.

Uwe Ligges


> My version information:
> 
> platform i386-pc-mingw32
> arch     i386           
> os       mingw32        
> system   i386, mingw32  
> status                  
> major    2              
> minor    0.1            
> year     2004           
> month    11             
> day      15             
> language R      
> 
> Any help greately appreciated!
> 
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