[Rd] NAMESPACES for data only packages

[Prof Brian Ripley]

Can we clarify:

As the NEWS says, to install a data-only package under 2.14.0 you need 
a namespace.  And if you do not give one installation will create one.

However, you can use an already-installed data-only package without a 
namespace under 2.14.x, but not under R-devel.  This is to allow a 
transition (e.g. many of the BioC 2.9 binary data-only packages did 
not have a namespace at the time).

On Tue, 8 Nov 2011, Joshua Wiley wrote:

> Hi Michael,
>
> You are correct that data does not *have* to be exported.  For
> example, here is the contents of NAMESPACE for the datasets package
> from a recent devel version:
>
> # This package exports nothing (it uses lazydata)
> # exportPattern(".")
>
> Cheers,
>
> Josh
>
> On Tue, Nov 8, 2011 at 9:11 AM, Michael Friendly <friendly at yorku.ca> wrote:
>> the NEWS file for R-devel says
>>
>>  *
>>
>>    Even data-only packages without *R* code need a namespace and so may
>>    need to be installed under *R* 2.14.0 or later.
>>
>>
>> but what should this contain?  Can it simply be an empty NAMESPACE
>> file?  I assume that data does not have to
>> be exported.
>>
>> -Michael
>>
>> --
>> Michael Friendly     Email: friendly AT yorku DOT ca
>> Professor, Psychology Dept.
>> York University      Voice: 416 736-5115 x66249 Fax: 416 736-5814
>> 4700 Keele Street    Web:   http://www.datavis.ca
>> Toronto, ONT  M3J 1P3 CANADA
>>
>>
>>        [[alternative HTML version deleted]]
>>
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>>
>
>
>
> -- 
> Joshua Wiley
> Ph.D. Student, Health Psychology
> Programmer Analyst II, ATS Statistical Consulting Group
> University of California, Los Angeles
> https://joshuawiley.com/
>
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>

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
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