[pymvpa] RPy and ENET

[tg at cs.york.ac.uk]

> I'm happy to take care of the move to rpy2, but it'll have to wait
> until right after the new year.

Hi Per and Yaroslav,

That would be great, thanks very much for looking into this!
Happy holidays,

Tara


> On 12/21/09, Yaroslav Halchenko <debian at onerussian.com> wrote:
>> Hi Tara,
>>
>> Unfortunately switch to (support of) Rpy2 is only in our plans and we
>> haven't touched it at all yet.
>>
>> I will check it out later on today if we could just use
>> rpy-compatibility layer in rpy2 for now... I will update you
>>
>> On Mon, 21 Dec 2009, Tara Gilliam wrote:
>>
>>> Hello,
>>
>>> When I try to import the ENET classifier, I get an dependency error
>>> about rpy being unavailable (PyMVPA version 0.4.3).
>>
>>> I can 'import rpy2', but not 'import rpy' - is it definitely the
>>> original RPy that is required, or will RPy2 also work? The system I
>>> am on is university-administered with RPy2 installed, and rpy does
>>> not work with our current version of R. So if possible I would
>>> prefer not having to install a lot of (unsupported) dependencies for
>>> just this classifier item.
>>
>>> Looking further, the segment of code seems to be this (clfs/enet.py,
>>> lines
>>> 18-22):
>>
>>> # do conditional to be able to build module reference
>>> if externals.exists('rpy', raiseException=True) and \
>>>    externals.exists('elasticnet', raiseException=True):
>>>     import rpy
>>>     rpy.r.library('elasticnet')
>>
>>
>>> From the Rpy2 documentation, there seems to be a sort of Rpy-compatible
>>> mode:
>>> from http://rpy.sourceforge.net/rpy2/doc/html/rpy_classic.html,
>>> allowing
>>> e.g.
>>
>>> import rpy2.rpy_classic as rpy
>>> rpy.r.library('splines')
>>
>>> Do you know of any (e.g. version-specific) issue that would prevent
>>> a local patch to the import statement from working here? Are there
>>> any plans to switch PyMVPA to RPy2?
>>
>>> Many thanks,
>>> Tara
>>
>>
>>> _______________________________________________
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>>> Pkg-ExpPsy-PyMVPA at lists.alioth.debian.org
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>>
>>
>> --
>>                                   .-.
>> =------------------------------   /v\  ----------------------------=
>> Keep in touch                    // \\     (yoh@|www.)onerussian.com
>> Yaroslav Halchenko              /(   )\               ICQ#: 60653192
>>                    Linux User    ^^-^^    [175555]
>>
>>
>>
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>