On Fri, 2006-09-15 at 12:43 -0500, Marc Schwartz (via MN) wrote: > On Fri, 2006-09-15 at 12:12 -0500, Kevin Wright wrote: > > R has had the ability to generate pdfs with transparent colors for a > > couple of years now using pdf(..., version="1.4"). > > > > By default, Sweave uses just 'pdf' (without version 1.4), so a hack is > > needed when using Sweave to create pdfs with transparent colors. See > > http://tolstoy.newcastle.edu.au/R/help/04/11/6655.html > > > > I would find my work process simpler if R defaulted to generating PDFs > > using version="1.4". The help page for R's pdf command says there is > > a risk of some older pdf viewers not being able to view newer PDFs. > > Does anyone have a feeling for how big a risk this is? I tried for a > > while to search google for pdf metadata and the distribution of pdf > > documents of different versions, but could find nothing useful to > > report. > > > > The PDF 1.4 specification appears to have been published in November, 2001. > > > > Is updating pdf() to version="1.4" feasible? > > > > Discussions on this topic will be watched with interest. > > > > Kevin Wright > > Rather than globally changing R, wouldn't it be better to add another > option to Sweave? > > For example, one can already specify 'height' and 'width' arguments for > figures, why not a pdf version value? > > If I am reading it correctly, the relevant code from Sweave.R seems to > be within the RweaveLatexRuncode() function: > > if(options$pdf){ > pdf(file=paste(chunkprefix, "pdf", sep="."), > width=options$width, height=options$height) > > Could this not be modified to something like: > > if(options$pdf){ > pdf(file=paste(chunkprefix, "pdf", sep="."), > width=options$width, height=options$height, > version = pdf.version)
Quick correction here. That final line should be: version = options$pdf.version) Thanks to Dirk for pointing out my typo. Marc ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
