[Rd] Link to pdf documentation from other package ?

Ulrike Groemping groemping at bht-berlin.de
Tue Nov 24 14:06:23 CET 2009

Duncan Murdoch-2 wrote:
> On 11/18/2009 8:01 AM, ml-it-r-devel at epigenomics.com wrote:
>> Ulrike Grömping wrote, On 11/18/09 13:28:
>>> Duncan Murdoch schrieb:
>>>> Ulrike Groemping wrote:
>>>>> Duncan Murdoch-2 wrote:
>>>>>> Ulrike Groemping wrote:
>>>>>>> Dear developeRs,
>>>>>>> I have not found anything recent about how to link to a vignette or
>>>>>>> other
>>>>>>> documentation from within Rd-files. Is this now possible with the
>>>>>>> new
>>>>>>> help
>>>>>>> system ? For example, I would like to link to the file AlgDesign.pdf
>>>>>>> provided within the doc directory of package AlgDesign.
>>>>>> Yes, you can do it with a \url{} macro.  Use a relative link, acting
>>>>>> as though the starting page is located in
>>>>>> /library/AlgDesign/html/*.  So \url{../doc/AlgDesign.pdf}
>>>>>> should work from the same package,
>>>>>> \url{../../AlgDesign/doc/AlgDesign.pdf} from elsewhere.  Please let
>>>>>> me know if this doesn't work, I haven't tested.
>>>>>> Duncan Murdoch
>>>>> Yes, this works, thanks! Is it also possible to display an
>>>>> alternative text
>>>>> instead of the URL itself, like with other links (e.g. show text
>>>>> "Open pdf"
>>>>> that operates the link) ?
> ...
> Within the dynamic help, you're also restricted in what files you can 
> link to:  they need to be help pages, or files in the doc directory of a 
> package, or a few other special cases.
> Duncan Murdoch
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel

Good that you mention this restriction, this makes me understand my new
problem. With his new version of AlgDesign, Bob Wheeler has made the file
AlgDesign.pdf into a vignette which is no longer located in the doc
directory but now in inst/doc. A link to that file from within my
documentation does not work any longer. Would it be possible to include the
directory inst/doc into the special cases to which linking is permitted ?


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