On 25/09/2013 11:38 PM, Ben Harrison wrote:
Hello,
I am mildly annoyed each time I use a PDF doc of an R package that the
table of contents hyperlinks are *only* on the page numbers. To activate
a hyperlink, one must carefully scan sideways from the text item wanted
to the far right of the page and click on a tiny box. Multiply that mild
annoyance by the large number of times I need to look up package help
docs, and I find myself here writing this message.
From my understanding (albeit poor), all of the R docs for packages are
to be written in Rd format. From that they are converted by the
functions in the tools package as required (to latex and PDF, or HTML,
etc). So the only thing that controls in the PDF docs the hyperlinks one
way or another is the latex style file used - in this case I believe it
is Rd.sty (/usr/share/R/share/texmf/tex/latex/Rd.sty on my system).
Line 303 of that file contains the single setting of the \hypersetup{}
command for whether or not the text in the table of contents is
hyperlinked, or the page number:
linktocpage,%
which causes it to implicitly be set to True. Setting it to false (or
just commenting out that line I suppose as false is the default) would
mean the *text* in the TOC is hyperlinked.
So, is the desired behaviour intended to be that only the page numbers
are hyperlinked (and therefore to annoy me), or has no-one really
bothered themselves with it that much, or something else?
It's been the way it is for about 14 years, and I don't recall anyone
else complaining, so I'd conclude it must have been set that way with
you in mind.
More seriously, I prefer having the page number clickable to having just
the text clickable. Having both would be fine for both of us. There's a
partially documented option "linktoc=all" that does that; it was added
to the hyperref package in 2008, so you can hardly blame R for not using
it back in 1999. The only problem I can see with using it now is that
some users might not have a sufficiently up-to-date LaTeX installation
to use it; if their hyperref package doesn't know about linktoc, they
won't be able to build anything at all.
Can I recreate all the documentation on my system after I make a change
to Rd.sty?
Easiest would be to just do a rebuild of R, but you could also do the
PDF manuals one at a time using
R CMD Rd2pdf <pkg>
from the directory where the package is installed, or where its source
lives.
Duncan Murdoch
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