[R] identify() and postscript output

[Michael Friendly]

Prof Brian Ripley wrote:
>>> If instead, I use dev.copy2eps() after getting output to the screen, 
>>> the point labels do not appear in the resulting .eps graph. Why?  Is 
>>> there a workaround?
>
> I don't think that is true:
>
> plot(1:10)
> identify(1:10)
> ## Click near points 6 and 7
> dev.copy2eps("test.eps")
>
> and the points I selected are marked in test.eps.
>
> Since Michael ignored the posting guide (again) we have no idea of 
> what version etc of R he used: I checked on 2.8.1 on Linux and also on 
> Mac OS. This was once a bug, fixed a while ago.
My bad. Thanks for Ripleying me. I'm using Win XP, R 2.8.1 with packages 
shown under sessionInfo() below.

 > plot(1:10)
 > identify(1:10)

 > ## Click near points 6 and 7
 > dev.copy2eps("test.eps")
Error in device(...) : unknown family 'test.eps'

I get output on WinXP by specifying file=
 > dev.copy2eps(file="test.eps")
windows
      2

But still no joy -- test.eps *does not* contain the point labels (I 
clicked on 7 & 8).  It's not a viewer problem --
I checked with gv on Linux.  Perhaps that bug wasn't fixed on WinXP?
I also attach a .png screen shot of the R graphics window.

 > sessionInfo()
R version 2.8.1 (2008-12-22)
i386-pc-mingw32

locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United 
States.1252;LC_MONETARY=English_United 
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252

attached base packages:
[1] grid      stats     graphics  grDevices utils     datasets  
methods   base    

other attached packages:
[1] gnm_0.9-8        vcdExtra_0.3-4   vcd_1.2-2        colorspace_1.0-0 
MASS_7.2-45      nnet_7.2-45    
[7] lattice_0.17-20  car_1.2-12     

loaded via a namespace (and not attached):
[1] qvcalc_0.8-4 tools_2.8.1
 >


-- 
Michael Friendly     Email: friendly AT yorku DOT ca 
Professor, Psychology Dept.
York University      Voice: 416 736-5115 x66249 Fax: 416 736-5814
4700 Keele Street    http://www.math.yorku.ca/SCS/friendly.html
Toronto, ONT  M3J 1P3 CANADA

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