From bbolker at gmail.com  Tue Jul 26 20:48:50 2011
From: bbolker at gmail.com (Ben Bolker)
Date: Tue, 26 Jul 2011 14:48:50 -0400
Subject: [Rd] plot.function documentation/export?
In-Reply-To: <4E2F086C.5030004@statistik.tu-dortmund.de>
References: <4E2D8F83.5010707@gmail.com>
	<4E2D9FEF.3060805@statistik.tu-dortmund.de>
	<4E2DA187.3010204@gmail.com>
	<4E2F086C.5030004@statistik.tu-dortmund.de>
Message-ID: <4E2F0C12.9070809@gmail.com>

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  OK, I see that BDR did this on 2011-06-08 -- I was getting confused by
looking at the code of the development version but running the release
version.

  Thanks.

   Ben


On 07/26/2011 02:33 PM, Uwe Ligges wrote:
> Now I see the difference: I was using R-devel and that worked as you
> expected.
> 
> Best,
> Uwe Ligges
> 
> On 25.07.2011 19:01, Ben Bolker wrote:
> On 07/25/2011 12:55 PM, Uwe Ligges wrote:
>>>>
>>>>
>>>> On 25.07.2011 17:45, Ben Bolker wrote:
>>>>
>>>>     I recently suggested to someone (
>>>> http://stackoverflow.com/questions/6789055/r-inconsistency-why-add-t-sometimes-works-and-sometimes-not-in-the-plot-functi/6789098#6789098
>>>>
>>>>
>>>> ) that the should use methods("plot") or methods(class="function") to
>>>> locate the documentation on the plot method for objects of class
>>>> "function", but they pointed out that these don't actually work.
>>>>
>>>>     I can't figure out why not: src/library/graphics/man/curve.Rd
>>>> contains
>>>> the line
>>>>
>>>> \method{plot}{function}(x, y = 0, to = 1, from = y, xlim = NULL, ylab =
>>>> NULL, \dots)
>>>>
>>>> and src/library/graphics/DESCRIPTION contains
>>>>
>>>>
>>>>> you mean the following line is in NAMESPACE rather than DESCRIPTION.
>>>>
>>>> S3method(plot, "function")
> 
>    Yes, sorry.
> 
>>>>
>>>>
>>>>    [presumably the extra quotes are in there because function is a
>>>> reserved word?]
>>>>
>>>>    I'm not sure where else the information should be.  Searching
>>>> around in
>>>> the code tree for information on tail.function (which is listed in the
>>>> methods:
>>>>
>>>>>>> methods(class="function")
>>>> [1] as.list.function head.function*   print.function   tail.function*
>>>>
>>>> I find the same S3method syntax, so I guess the quotation marks aren't
>>>> the problem ...
>>>>
>>>>> ?tail.function
>>>>
>>>>> tells us this one is from package "utils" and you can search for this
>>>>> function in the sources of the utils package
>>>>
>>>>> Or you could ask for
>>>>
>>>> getAnywhere("tail.function")
>>>>
>>>>> and R tells you
>>>>
>>>>> A single object matching tail.function was found
>>>>> It was found in the following places
>>>>>    registered S3 method for tail from namespace utils
>>>>>    namespace:utils
>>>>> [.....]
>>>>
>>>>> Best wishes,
>>>>> Uwe
>>>>
>>>>
>>>>
> 
>    Sorry, I didn't frame my question very clearly.  I can find
> "tail.function" just fine, or I could if I wanted to.   What I don't
> know is why methods("plot") and methods(class="function") don't list
> "plot.function" even though its documentation and setup seem to be
> similar to "tail.function", which *does* show up in
> methods(class="function") ...
> 
>    cheers
>      Ben Bolker
> 
> 
> =========
> 
>    No plot.function listing in either of these ...
> 
>>>> library("graphics")
>>>> methods("plot")
>   [1] plot.acf*           plot.data.frame*    plot.decomposed.ts*
>   [4] plot.default        plot.dendrogram*    plot.density
>   [7] plot.ecdf           plot.factor*        plot.formula*
> [10] plot.hclust*        plot.histogram*     plot.HoltWinters*
> [13] plot.isoreg*        plot.lm             plot.medpolish*
> [16] plot.mlm            plot.ppr*           plot.prcomp*
> [19] plot.princomp*      plot.profile.nls*   plot.spec
> [22] plot.spec.coherency plot.spec.phase     plot.stepfun
> [25] plot.stl*           plot.table*         plot.ts
> [28] plot.tskernel*      plot.TukeyHSD
> 
>     Non-visible functions are asterisked
>>>> methods(class="function")
> [1] as.list.function head.function*   print.function   tail.function*
> 
>     Non-visible functions are asterisked
> 
> 
> 
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[Rd] plot.function documentation/export?
Ben Bolker