[pymvpa] ‘LinearNuSVMC’ is not defined error with smlr.py

[Emanuele Olivetti]

Howdy,

Michael Hanke wrote:
> Hi, Jo,
>
> On Fri, Feb 20, 2009 at 12:54:18PM +0100, Jo Etzel wrote:
>   
>> Thank you for all of your previous help. I am only starting to get 
>> familiar with pyMVPA, so apologize if this is an obvious question.
>>
>> I am running pyMVPA on Windows XP, following your installation 
>> instructions (Python 2.5.4, IDLE 1.2.4, NumPy, SciPy, PyNIfTI, 
>> matplotlib; all with binaries); I’m using the IDLE shell. I can run the 
>> start_easy.py and smellit.py examples, but not smlr.py. smlr.py runs 
>> partway, then gives the error ‘name ‘LinearNuSVMC’ is not defined’.
>>
>> In the mvpa.clfs.libsvmc module I only see classes C, N, c_darray, 
>> ctypes_helper, debug, extend_args, os, smlrib, stepwise_regresion, and 
>> sys; attempting to load mvpa.clfs.libsvmc.svm gives the error ‘cannot 
>> import name _svmc’. (I actually want to get to a linear SVM.)
>>
>> I tried installing libsvm, and I think it worked (I can ‘from svm import 
>> *’ in python), but the problem remains. Is this an installation or 
>> configuration problem?
>>     
>
> Did you compile PyMVPA yourself? I just used the binary installer we
> provide on the website and checked the smlr.py example -- it runs just
> fine.
>
> The pymvpa sources include a copy of libsvm that should be built
> automatically as a dependency of the SVM extension. It looks like in
> your case that did not happen.
>
> Can you give us some more information how you installed pymvpa (and
> which version)? Could you also please check whether the windows
> installer works for you?
>
>   

I've just compiled the latest tarball and got a similar error,
immediately corrected after installing in this way:
python setup.py install --with-libsvm
as described in doc/installation.txt (see from line 508).
I have ubuntu hardy 8.04 with libsvm-dev installed.
I guess this was feature and not a bug ;)

E.