[R-SIG-Mac] problems with the data editor

[Simon Urbanek]

John,

I have fixed the empty dataset issue and few other borderline cases,  
so please try the updated R.app GUI (either from SVN or wait until  
it's available again).

However, there are apparently still some issues in the UI that I was  
not able track down since they occur only sparsely and randomly all  
over the place in internals of the Cocoa event handling when deleting  
multiple columns at once. They don't crash in our R.app code, so it's  
extremely difficult to trace. All I can say is don't delete multiple  
columns at once after busy adding/deleting ;). We really need a  
rewrite here ...

Thanks,
Simon


On Jan 9, 2009, at 2:07 PM, John Fox wrote:

> Dear list members,
>
> I thought that I recalled a recent posting reporting a problem with  
> the R
> data editor, but I haven't been able to locate the message in the list
> archive.
>
> In any event, I can reliably cause the R.app data editor either to  
> hang or
> to produce errors in a couple of ways, the first of which is easier to
> describe (the X11 data editor seems more robust, if limited in its
> capabilities):
>
> (1) Edit an empty data frame (which works in the Windows and X11 data
> editors): edit(as.data.frame(NULL)).
>
> (2) Edit any data frame "vigorously," adding a deleting rows and  
> columns
> repeatedly. E.g., library(car); edit(Prestige).
>
> I'm using R 2.8.1 installed from the binary on CRAN under OS X  
> 10.5.5 on a
> MacBook.
>
> I wonder whether anyone else has observed these problems or has an  
> idea
> about how to fix them.
>
> (I'm copying Brian Ripley since we exchanged emails about this issue  
> earlier
> today.)
>
> Regards,
> John
>
> ------------------------------
> John Fox, Professor
> Department of Sociology
> McMaster University
> Hamilton, Ontario, Canada
> web: socserv.mcmaster.ca/jfox
>
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