Thank you both. It works like a charm (tried it on Windows). /Henrik
On Wed, Jul 31, 2013 at 7:17 AM, Simon Urbanek <simon.urba...@r-project.org> wrote: > > On Jul 31, 2013, at 12:12 AM, Henrik Bengtsson wrote: > >> Hi Duncan, >> >> this is perfect timing. Your >> https://github.com/duncantl/png/blob/master/testMeta.R example >> illustrates what I'm looking for. >> >> Yes, it would be great if this would be incorporated into the 'png' package. >> > > Ok, I have added support for both text chunks and arbitrary R metadata to the > PNG package. > http://rforge.net/png > The it is based on Duncan's idea, but the implementation and API is different > -- Duncan's approach was implemented before png has support for the PNG info, > so it is now simply extending that concept. You can store native text > key/values pairs. In addition, R-native matadata can be attached -- it is > stored as a special key "R.metadata" holding the serialization of the R > object. See the last example in > http://rforge.net/doc/packages/png/writePNG.html > Feedback is welcome. > > Cheers, > Simon > > > >> Thanks, >> >> Henrik >> >> On Tue, Jul 30, 2013 at 8:04 PM, Duncan Temple Lang >> <dtemplel...@ucdavis.edu> wrote: >>> >>> Hi Henrik >>> >>> I have some extensions of Simon U's png package >>> to read and write metadata elements for PNG. >>> They are at >>> https://github.com/duncantl/png.git >>> >>> When I have time to completely test them, maybe Simon >>> may incorporate them. >>> >>> D. >>> >>> 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@r-project.org mailing list >>>> https://stat.ethz.ch/mailman/listinfo/r-devel >>>> >>> >>> ______________________________________________ >>> R-devel@r-project.org mailing list >>> https://stat.ethz.ch/mailman/listinfo/r-devel >> >> ______________________________________________ >> R-devel@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-devel >> >> > ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
