[Rd] Loss of identified points

[Prof Brian Ripley]

On 29/04/2013 02:54, Terry Therneau wrote:
> Minimizing and then restoring a window that contains identified points
> leads to an error on my linux box.

See the posting guide.  NEWS in R-patched says

     • In R 3.0.0, identify() and locator() did not record information
       correctly, so replaying a graph (e.g. by copying it to another
       device) would fail. (PR#15271)

If your device does not use backing store (mine does) then minimizing 
and replaying will replay the display list.


>
>> sessionInfo()
> R version 3.0.0 (2013-04-03)
> Platform: i686-pc-linux-gnu (32-bit)
>
> locale:
>   [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
>   [3] LC_TIME=en_US.UTF-8        LC_COLLATE=C
>   [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8
>   [7] LC_PAPER=C                 LC_NAME=C
>   [9] LC_ADDRESS=C               LC_TELEPHONE=C
> [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>> sessionInfo()
> R version 3.0.0 (2013-04-03)
> Platform: i686-pc-linux-gnu (32-bit)
>
> locale:
>   [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
>   [3] LC_TIME=en_US.UTF-8        LC_COLLATE=C
>   [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8
>   [7] LC_PAPER=C                 LC_NAME=C
>   [9] LC_ADDRESS=C               LC_TELEPHONE=C
> [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
>> plot(1:5, 1:5)
>> identify(1:5, 1:5, letters[2:6])
>
> # Identify a point or two, then minimize the graph window, then restore it
>> Error: first argument must be a string (of length 1) or native symbol
> reference
>
> The graph returns  but the labels are lost.
>
> Terry T.
>
> 	[[alternative HTML version deleted]]
>
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>


-- 
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