R devel - Feb 2006 - addmargins

> addmargins(UCBAdmissions, FUN = list(Total=sum))
works with no problems, but consider:

 > myFUN <- list(Total=sum)
 > addmargins(UCBAdmissions, FUN = myFUN)
Error in "names<-.default"(`*tmp*`, value = "") :
         names() applied to a non-vector

Is this a bug?


 > R.version
          _
platform i386-pc-mingw32
arch     i386
os       mingw32
system   i386, mingw32
status
major    2
minor    2.1
year     2005
month    12
day      20
svn rev  36812
language R


J. R. M. Hosking

On Mon, 13 Feb 2006, J. Hosking wrote:
> > addmargins(UCBAdmissions, FUN = list(Total=sum))
>
> works with no problems, but consider:
>
> > myFUN <- list(Total=sum)
> > addmargins(UCBAdmissions, FUN = myFUN)
> Error in "names<-.default"(`*tmp*`, value = "") :
>         names() applied to a non-vector
>
> Is this a bug?
I believe so.  addmargins contains

FUN <- eval(add.names(substitute(FUN)))

and that only makes sense if FUN is a call and not a symbol.  I've made 
the appropriate change to R-devel.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
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