From ggrothendieck at gmail.com  Tue Nov 24 16:38:17 2009
From: ggrothendieck at gmail.com (Gabor Grothendieck)
Date: Tue, 24 Nov 2009 10:38:17 -0500
Subject: [Rd] Link to pdf documentation from other package ?
In-Reply-To: <4B0BFB12.4080306@stats.uwo.ca>
References: <26405139.post@talk.nabble.com> <4B03DD64.6010206@stats.uwo.ca> 
	<26406675.post@talk.nabble.com> <4B03E4E9.1090209@stats.uwo.ca> 
	<4B03E883.1080707@bht-berlin.de> <4B03F01D.4010400@epigenomics.com> 
	<4B03F6AB.8080503@stats.uwo.ca>
	<971536df0911240520pe6e52d7qaf6f99e2b3dbde94@mail.gmail.com> 
	<4B0BFB12.4080306@stats.uwo.ca>
Message-ID: <971536df0911240738h6a25d8fdhaf002a02576d812f@mail.gmail.com>

On Tue, Nov 24, 2009 at 10:26 AM, Duncan Murdoch <murdoch at stats.uwo.ca> wrote:
> On 11/24/2009 8:20 AM, Gabor Grothendieck wrote:
>>
>> On Wed, Nov 18, 2009 at 8:29 AM, Duncan Murdoch <murdoch at stats.uwo.ca>
>> wrote:
>>>>
>>>> you could use the Sweave like macro to compute the path inside the Rd
>>>> environments
>>>>
>>>> \Sexpr{file.path(system.file(package="AlgDesign", "doc"),
>>>> "AlgDesign.pdf")}
>>>>
>>>> described in 'Writing R extensions' 2.11
>>>>
>>>>
>>>> <http://stat.ethz.ch/R-manual/R-patched/doc/manual/R-exts.html#Dynamic-pages>
>>>
>>>
>>> That won't work with dynamic help. (It surprised me, too.) ?You can't
>>> link
>>> to the file system from within the dynamic help pages. ?You can't link to
>>> a
>>> file:// link, which is what you'd need to get that to work.
>>>
>>> This is a browser restriction, for security reasons. ?You don't want
>>
>> I am able to read files from my file system from the browser. ?For
>> example enter this into the Windows command line:
>>
>> echo some dummy text > dummy.html
>> echo "<a href=dummy.html>dummy</a>" > test-read-file.html
>> test-read-file.html
>>
>> and click on dummy when the contents of test-read-file.html appears in
>> the browser.
>>
>> For me, it causes the contents of the dummy.html file to appear in the
>> browser. ?I am on Windows Vista and I tried it in IE8, Firefox 3.5.5
>> and Chrome 3.0 and it worked in all three.
>
> The rule in most browsers is that pages retrieved via http:// links can't
> link to file:// links. ?Presumably your local file was already a file://
> link.

But the help files are local.  It would seem that this problem would
be addressed if the help files were not displayed using http://



[Rd] Link to pdf documentation from other package ?
Gabor Grothendieck