[pymvpa] RPy and ENET

[Tara Gilliam]

> If no one objects, I'll go ahead and implement all this.  Let me know
> if you have suggestions for other ways I should go about handling this
> rpy business...

Hi Per,

Thanks for looking into this! I'm very busy next week, but after that I'd be 
happy to test out any changes if needed.

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
>>>>
>>>>> _______________________________________________
>>>>> Pkg-ExpPsy-PyMVPA mailing list
>>>>> Pkg-ExpPsy-PyMVPA at lists.alioth.debian.org
>>>>> http://lists.alioth.debian.org/mailman/listinfo/pkg-exppsy-pymvpa
>>>>
>>>> --
>>>>                                   .-.
>>>> =------------------------------   /v\  ----------------------------=
>>>> Keep in touch                    // \\     (yoh@|www.)onerussian.com
>>>> Yaroslav Halchenko              /(   )\               ICQ#: 60653192
>>>>                    Linux User    ^^-^^    [175555]
>>>>
>>>>
>>>>
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>>>>
>>