[R-SIG-Mac] ESC to stop locator() before hitting the specified number of points

[Simon Urbanek]

On Jun 2, 2008, at 9:02 PM, Denis Chabot wrote:

> Hi,
>
> I thought (and the help confirms this belief) that ESC was one way  
> to get out of a locator call before reaching the number of points  
> specified in the call. I cannot get this to work on my MacBook Pro  
> with 10.5.3. Here is the session info:
>
> > sessionInfo()
> R version 2.7.0 Patched (2008-05-07 r45642)
> i386-apple-darwin9.2.2
>
> locale:
> fr_CA.UTF-8/fr_CA.UTF-8/C/C/fr_CA.UTF-8/fr_CA.UTF-8
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> > plot(1:10)
> > locator(n=3)
>
> No way to get out of locator without clicking 3 times on the plot.
>
> Am I doing something wrong (I tried ESC, shift-ESC, command-ESC,  
> control-ESC, option(Alt)-ESC, to no avail (except that one of them  
> starts Front Row!). Are you able to ESC from locator?
>

Yes, if you use a more recent R-patched  (r45743 from 5/20 or later).  
Previous versions react only to <Ctrl><Click>, later ones react to  
both <Esc> and <Ctrl><Click>.

Cheers,
Simon