[Rd] Summary: Identifying graphics files produced by R

From: David M Smith <david_at_revolution-computing.com>
Date: Mon, 16 Feb 2009 14:02:11 -0800


Thanks to all those that responded to the question below, either on-list or privately. The bottom line is that there's no identifying information from R in the metadata for PNG or JPG files (and R doesn't produce GIFs). I did however figure out a way to automate a search for PDF and PostScript files produced by R, and the details are here: http://blog.revolution-computing.com/2009/02/r-graphics-in-the-media.html

Thanks,
# David Smith

On Fri, Feb 13, 2009 at 1:15 PM, David M Smith < david_at_revolution-computing.com> wrote:

> Oftentimes, I see graphs on the web that *look* like they've been
> produced by R, but I can never be sure. Or can I? I notice that
> PostScript files include a "%%%Creator: R Software" line, but do R
> graphics drivers encode any identifying information in GIF or PNG
> files more commonly used on the web? And of so, would such evidence
> necessarily be obliterated in post-processing (e.g cropping)?
>
> I'm trying to do an informal survey of R's use to create statistical
> graphics on the web, and if there's a way to identify graph files I
> see as coming from R it would help a lot.
>
> Thanks,
> # David Smith
>
> --
> David M Smith <david_at_revolution-computing.com>
> Director of Community, REvolution Computing www.revolution-computing.com
> Tel: +1 (206) 577-4778 x3203 (Seattle, USA)
>

-- 
David M Smith <david_at_revolution-computing.com>
Director of Community, REvolution Computing www.revolution-computing.com
Tel: +1 (206) 577-4778 x3203 (Seattle, USA)

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