From ripley at stats.ox.ac.uk  Mon Dec 19 12:22:50 2011
From: ripley at stats.ox.ac.uk (Prof Brian Ripley)
Date: Mon, 19 Dec 2011 11:22:50 +0000
Subject: [Rd] Possible bug in edit(x) for editing matrices [tested on a
 Mac]
In-Reply-To: <2749EBD6-2786-4E5C-BC58-7B8AE4177AE4@eva.mpg.de>
References: <2749EBD6-2786-4E5C-BC58-7B8AE4177AE4@eva.mpg.de>
Message-ID: <4EEF1E8A.2020206@stats.ox.ac.uk>

On 19/12/2011 09:48, Hans-J?rg Bibiko wrote:
> Hi,
>
> it seems there's a possible bug in edit(x) if x is a matrix filled with NA only.

It's as documented.  Hint: look at mode(a) or str(a), and check what 
values are accepted for a logical matrix.

> To reproduce please do the following:
>
> a<- matrix()
> edit(a)
>
> change e.g. the cell value to 1 and close the GUI-based editor. edit(a) returns NA. This also happens for any dimension of the matrix as long as all cell values are NA. If at least one of the cell values is not NA it works correctly. The same behaviour I also get via "fix(x)".
>
> I tried this by using R via the Terminal (editing via X11 and Tcl/Tk) and the Mac R-GUI app.
>
> Here's my sessionInfo():
>
> R version 2.14.0 (2011-10-31)
> Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)
>
> locale:
> [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
>
> Any ideas? Or is this an undocumented behaviour?

> Best,
> --Hans
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/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)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595



[Rd] Possible bug in edit(x) for editing matrices [tested on a Mac]
Prof Brian Ripley