[R-SIG-Mac] Saving pdf with transparent background

[Simon Urbanek]

On May 20, 2008, at 7:32 AM, Gerald Jurasinski wrote:

> Dear List,
>
> Usually I save my current graphics device window to a pdf file.  
> Before 2.7.0 the resulting file was with transparent background (as  
> desired) when I set bg="transparent" for the current on-screen  
> graphics device before plotting.
>
> Now this is different. I already read about the new quartz device in  
> the help file. And as far as I understood, only the canvas is  
> supposed to be opaque and not the background of the plot (at least  
> when it is set to "transparent" via par(bg="transparent") or via  
> quartz(bg="transparent")). So when it comes to saving the plot from  
> the current on-screen graphics device I expect the resulting graphic  
> file to have a transparent background. This was the former behavior  
> (until 2.6.2). But now the background color of the canvas seems to  
> be taken as the background of the resulting pdf.
>

Yes, the copy/save was really truthful even to the point of using the  
same canvas. I have fixed this to match the previous behavior which  
seems more logical to me.

Thanks,
Simon


> Only with quartz.save() I can get a transparent background. Is there  
> a possibility to save the active on-screen graphics device to a file  
> with transparent background? Even better would be the possibility to  
> cmd-c / cmd-v a plot with transparent background to use in other  
> applications (e.g. keynote and such).
>
> Thanks for your help.
> Best regards
>
> Gerald
>
> I'm running R on a MBP 2.2GHz C2D with Mac OS 10.5.2
>
> > sessionInfo()
> R version 2.7.0 (2008-04-22)
> i386-apple-darwin8.10.1
>
> locale:
> de_DE.UTF-8/de_DE.UTF-8/C/C/de_DE.UTF-8/de_DE.UTF-8
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> other attached packages:
> [1] simba_0.2-5   plotrix_2.4-1 geoR_1.6-21   sp_0.9-25      
> gplots_2.6.0
> [6] gdata_2.4.1   gtools_2.4.0  vegan_1.11-4
>
> loaded via a namespace (and not attached):
> [1] grid_2.7.0     lattice_0.17-6 tools_2.7.0
>
> ——————————————————
>
> gerald jurasinski
> fahnenstraße 8
> 18057 rostock
> terhorab at mac.com
> +49 381 8774550
>
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