On 12/01/2011 04:36 PM, Aronne Merrelli wrote:

On Wed, Nov 30, 2011 at 3:01 AM, Per Nielsen <evilper@gmail.com> wrote:

Hi all

I am trying to create a subclass of the sparse matrix class in scipy, to add some extra methods I need. 

I have tried to follow the guide on: http://www.scipy.org/Subclasses but without much luck, the view method does not exist for the sparse matrix class. Below is a script I have created

Hi,

It appears that sparse matrices do not inherit from numpy.ndarray:

Surely you did notice that sparse is part of scipy not numpy or even the c++ usage when looking at the code? :-)
As far as I know (which is not much) scipy.sparse is essentially self-contained in scipy/sparse directory. So you are better off just working with those files directly.