[pymvpa] error when running example script - projections.py

[Yaroslav Halchenko]

you would need to install mdp for that example:
http://mdp-toolkit.sourceforge.net/

under Debian (e.g. within that virtual machine) it is 

apt-get install python-mdp

On Tue, 16 Nov 2010, Meng Liang wrote:

>    Dear all,
>    Another question: when I tried to run the example script (projections.py
>    in \doc\examples), I got the following error:
>    Traceback (most recent call last):
>      File
>    "D:\data\Software\python\pymvpa_0.4.4\pymvpa-0.4.4\doc\examples\projections.py",
>    line 16, in <module>
>        from mvpa.mappers.pca import PCAMapper
>      File "C:\Python25\Lib\site-packages\mvpa\mappers\pca.py", line 20, in
>    <module>
>        if externals.exists('mdp', raiseException=True):
>      File "C:\Python25\Lib\site-packages\mvpa\base\externals.py", line 455,
>    in exists
>        raise RuntimeError, "Required external '%s' was not found" % dep
>    RuntimeError: Required external 'mdp' was not found
>    Any advice? Many thanks!
>    Meng

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