[SciPy-dev] scipy.splinalg or bust

Nils Wagner nwagner@iam.uni-stuttgart...
Sat Jan 26 01:19:57 CST 2008


On Fri, 25 Jan 2008 14:30:18 -0600
  "Nathan Bell" <wnbell@gmail.com> wrote:
> I've started migrating code to scipy.splinalg.
> 
> Completed tasks:
> 
>      (1) linalg.iterative -> splinalg.isolve
>           http://projects.scipy.org/scipy/scipy/changeset/3861
> 
>           For backwards compatibility scipy.linalg 
>imports all the
>           iterative solvers from  splinalg.isolve . 
> This is needed to
>           avoid breaking things like  'from scipy.linalg 
>import cg'
>           What's the best way to inform the user that 
>these functions
>           have moved?  Is there a nice way to decorate 
>these functions
>           to issue a warning?
> 
> Remaining tasks:
> 
>       (1) sandbox.lobpcg -> splinalg.eigen.lobpcg
>       (2) sandbox.arpack -> splinalg.eigen.arpack
>       (3) create splinalg.eigen.speigs
>       (4) scipy.linsolve -> splinalg.dsolve
>       (5) scipy.linsolve.umfpack -> scikit
>       (6) create LinearOperator wrapper class and 
>document it
>       (7) document splinalg.dsolve
>       (8) document splinalg.isolve
>       (9) document splinalg.eigen
> 
> I will start working on (4) now.  Should I remove 
>umfpack in the process?
> linalg
> Robert C, can you give us a timeline on (1) and (5)? 
> Can (1) be done
> without symeig (perhaps using scipy.linalg.eig as a 
>fallback)?
> 
> Any volunteers for (2) and (3)?  For reference:
>   http://projects.scipy.org/scipy/scipy/wiki/ArpackWrapper
> Here are the remaining ARPACK tickets:
>    http://projects.scipy.org/scipy/scipy/ticket/231
>    http://projects.scipy.org/scipy/scipy/ticket/366
>    http://projects.scipy.org/scipy/scipy/ticket/554
> 
> 
There is another ticket with respect to ARPACK

http://projects.scipy.org/scipy/scipy/ticket/418

Cheers,

            Nils

> We discussed a plan for (6) in this thread:
> http://thread.gmane.org/gmane.comp.python.scientific.devel/7070/focus=7285
> Any comments/suggestions are most welcome.
> 
> 
> 
> -- 
> Nathan Bell wnbell@gmail.com
> http://graphics.cs.uiuc.edu/~wnbell/
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