[Rd] Adding text comments to graphics device output files?

Duncan Temple Lang dtemplelang at ucdavis.edu
Wed Jul 31 05:04:30 CEST 2013

Hi Henrik

 I have some extensions of Simon U's png package
to read and write metadata elements for PNG.
They are at

When I have time to completely test them, maybe Simon
may incorporate them.


On 7/30/13 7:59 PM, Henrik Bengtsson wrote:
> Hi,
> several image file format supports textual/meta data comments in one
> way or the other.  For me an obvious usage would be to add
> sessionInfo() information to PNG and PDF image files, ideally from
> within R although external tools would work as well(*).  Has anyone
> looked into this or have any suggestions or comments?
> /Henrik
> (*) One could even imagine including self-contained R
> scripts/vignettes within such comments.
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel

More information about the R-devel mailing list