[R] Modifying Code in .rda based packages (e.g. lme4)

[joerg van den hoff]

Prof Brian Ripley wrote:

>No standard R package is supplied as a .rda, including not lme4.  You
>must be looking at a binary installation, and you would do best to
>reinstall from the sources.  You could use
>
>R --vanilla
>load("..../all.rda")
>fix(GLMM)
>save(ls(all=T), file="..../all.rda", compress = TRUE)
>q()
>
>but we would not recommend it.  Indeed, we do not recommend your altering
>functions in other people's packages.  Why not just make a copy of GLMM
>with another name and alter that?
>
>
>On Fri, 11 Jun 2004, Dieter Menne wrote:
>
>  
>
>>assume I want to make a minor local change in a package that is supplied as
>>.rda. For example, I want to get rid of the non-verbose-protected
>>"Iteration" message in GLMM/lme4.
>>
>>Probably I have to load / change / save the package, but could someone help
>>me to get the syntax right?
>>    
>>
>
>  
>
I think, saving need to be done with

save(list=ls(all=T), file="..../all.rda", compress = TRUE)

otherwise R  complains about

        Object "ls(all = T)" not found

(the '...' argument comes first in the 'save' argument list)