[Rd] [Fwd: buglet (?) in de.restore()]

[Peter Dalgaard]

Ben Bolker wrote:
>   I'm resending this after a decent interval of 20 days -- any
> opinions?  Should I file it as a bug report?  Is it my mistake?
>   
It just slipped through the cracks, I suppose. I think it looks like a
buglet -- the [[1]] in dimnames(args[[i]])[[1]] doesn't make sense
unless dim(args[[i]]) is nonscalar. The suggested fix should be neutral
since nrow(x)==dim(x)[1] by definition.

I've fixed it now, but in principle it is the kind of material that bug
reports are made of.

    -p
>   cheers
>     Ben Bolker
>
>
> -------- Original Message --------
> Subject: 	buglet (?) in de.restore()
> Date: 	Tue, 21 Aug 2007 13:29:33 -0400
> From: 	Ben Bolker <bolker at zoo.ufl.edu>
> To: 	r-devel at r-project.org
>
>
>
>   If one calls data.entry() with a matrix:
>
> A = matrix(0,2,2)
> data.entry(A)
>
> everything works fine except that it triggers a warning:
>
> Warning message:
> the condition has length > 1 and only the first element will be used in:
>   if (dim(x) == dim(args[[i]])) rn <- dimnames(args[[i]])[[1]] else rn 
> <- NULL
>
> This is triggered by the following lines in de.restore() [in 
> src/library/utils/R/de.R]:
>   
>>   if( dim(x) == dim(args[[i]]) )
>>                 rn <- dimnames(args[[i]])[[1]]
>>             else rn <- NULL
>>     
>   It would seem to make sense to replace the condition with
>
> if (nrow(x) == nrow(args[[i]]))
>
>   (de.restore() is only called if an element of the list passed to 
> data.entry
> has more than one column)
>
>  On a side note, I'm curious why
>
>   
>>> A = matrix(0,2,2)
>>> is.vector(A)
>>>       
>> [1] FALSE
>>     
>>> is(A,"vector")
>>>       
>> [1] TRUE
>>     
>  ...
>
> ------------------
> sessionInfo()
> R version 2.5.1 (2007-06-27)
> i486-pc-linux-gnu
>
> locale:
> LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=en_US.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C
>
> attached base packages:
> [1] "stats"     "graphics"  "grDevices" "utils"     "datasets"  "methods" 
> [7] "base"
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>   


-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
 (*) \(*) -- University of Copenhagen   Denmark          Ph:  (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)                  FAX: (+45) 35327907