[SciPy-user] What happened to ARPACK shift-invert/general eigenproblem routine?

Neilen Marais nmarais@sun.ac...
Tue Feb 12 11:42:24 CST 2008


On Mon, 11 Feb 2008 21:50:11 +0100, Nils Wagner wrote:

> Did you try
> 
> from scipy.splinalg.eigen.arpack import speigs
>   
>>>> dir (speigs)
> ['ARPACK_eigs', 'ARPACK_gen_eigs', 'ARPACK_iteration',
> 'ArpackException', '__all___', '__builtins__', '__doc__', '__file__',
> '__name__', '_arpack', 'check_init', 'init_debug',
> 'init_postproc_workspace', 'init_workspaces', 'np', 'postproc',
> 'warnings']

Ah, thanks. I was confused since 

In [2]: from scipy.splinalg.eigen import arpack 

In [3]: dir(arpack)
Out[3]: 
['__all___',
 '__builtins__',
 '__doc__',
 '__docformat__',
 '__file__',
 '__name__',
 '_arpack',
 '_ndigits',
 '_type_conv',
 'aslinearoperator',
 'eigen',
 'eigen_symmetric',
 'np',
 'warnings']

yielded a blank. Perhaps I should have looked further :)

Regards
Neilen

> 
> Nils




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