[Rd] Identifying graphics files produced by R

From: David M Smith <david_at_revolution-computing.com>
Date: Fri, 13 Feb 2009 13:15:46 -0800


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)

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