[SciPy-dev] scipy.splinalg or bust

Robert Cimrman cimrman3@ntc.zcu...
Fri Feb 1 04:48:49 CST 2008


Nathan Bell wrote:
> On Jan 31, 2008 9:21 AM, Robert Cimrman <cimrman3@ntc.zcu.cz> wrote:
>> Great! what about allowing the LinearOperator.__init__() to take care of
>> the cases that aslinearoperator() takes care of? Or
>> LinearOperator.fromany()/fromAny() static/class method?
> 
> I considered that approach but decided against it.  I like keeping
> LinearOperator dead simple since it's what end users will have to
> understand if they want to hook up their matrix-like objects to scipy
> solvers.  Currently aslinearoperator() is the part that "knows" about
> scipy/numpy while LinearOperator is just an abstract interface.
> 
> Another practical issue is that LinearOperator needs to be initialized
> with at least two arguments (shape and matvec) while
> aslinearoperator() only accepts one.  The classmethod approach avoids
> this, but I have a (possibly irrational) dislike for classmethods :)
> 
> Scipy users should understand asarray(), so I think aslinearoperator()
> is a fairly natural extension.

Ok, I have nothing against :)

r.


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