[Numpy-discussion] Dealing with the mode argument in qr.

Bradley M. Froehle brad.froehle@gmail....
Wed Feb 6 14:38:10 CST 2013


> This would be a problem imho. But I don't see why you can't add "raw" to
>> numpy's qr. And if you add "big" and "thin" in numpy, you can add those
>> modes in scipy too.
>>
>
> Currently I've used bfroehle's suggestions, although I'm tempted by 'thin'
> instead of 'reduced'
>

Thin sounds fine to me.  Either way I think we need to clean up the
docstring to make the different calling styles more obvious.  Perhaps we
can just add a quick list of variants:
q, r = qr(a) # q is m-by-k, r is k-by-n
q, r = qr(a, 'thin')  # same as qr(a)
q, r = qr(a, 'complete') # q is m-by-n, r is n-by-n
   r = qr(a, 'r') # r is ....
a2  = qr(a, 'economic') # r is contained in the upper triangular part of a2
a2, tau = qr(a, 'raw') # ...

Regards,
Brad
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.scipy.org/pipermail/numpy-discussion/attachments/20130206/3ea851ed/attachment.html 


More information about the NumPy-Discussion mailing list