From ligges at statistik.tu-dortmund.de  Sat Jan 25 16:32:36 2014
From: ligges at statistik.tu-dortmund.de (Uwe Ligges)
Date: Sat, 25 Jan 2014 16:32:36 +0100
Subject: [Rd] package NAMESPACE question
In-Reply-To: <21219.49638.506680.884531@max.nulle.part>
References: <CAAyVsXJcacs23_DYgTqBto9T3Nww=Me3YdS=LLFhfBoOygX2PQ@mail.gmail.com>
	<21219.49638.506680.884531@max.nulle.part>
Message-ID: <52E3D914.7010208@statistik.tu-dortmund.de>



On 25.01.2014 14:53, Dirk Eddelbuettel wrote:
>
> On 25 January 2014 at 14:38, Axel Urbiz wrote:
> | Hello,
> |
> | I'm building a package. My code is stored in foo.R. This code has two
> | functions FUN1 and FUN2. FUN1 calls FUN2. FUN1 is listed in export() under
> | the package NAMESPACE but NOT FUN2. After building the package when I call
> | FUN1 is giving me an error that cannot find FUN2.
>
> Then you are doing something wrong in building, or possibly testing, the package.


I guess you have FUN1 in your Workspace and using that rather than the 
one in your package.

Uwe Ligges


> "Everything within" can see everything else.
>
> | I solved this by adding FUN2 in the export() NAMESPACE. However, what is
> | puzzling me is that I have other examples similar to the above (i.e., one
> | function calling another but only one exported) in the same package where I
> | don't get the error message.
> |
> | Any idea of why that might be the case? My understanding is that export
>
> We cannot tell without seeing the code.
>
> I suggest you spend two minutes with package.skeleton(), create an empty
> package, put something like these two functions in
>
>           multiply <- function(x, k) x * k
>
>           timestwo <- function(x) multiply(x, 2)
>
> to convince yourself that timestwo() can in fact use multiply().
>
> | only controls what is visible to the end user but functions not listed in
> | export() are still "usable" within the package.
> |
> | In this case, the reason I'd like to avoid to export FUN2 is so I don't
> | have to add it in the package documentation.
> |
> |
> | Any guidance is much appreciated.
> |
> | Regards,
> | Axel.
> |
> | 	[[alternative HTML version deleted]]
> |
> | ______________________________________________
> | R-devel at r-project.org mailing list
> | https://stat.ethz.ch/mailman/listinfo/r-devel
>



[Rd] package NAMESPACE question
Uwe Ligges