[SciPy-user] RQ Decomposition

Nils Wagner nwagner at mecha.uni-stuttgart.de
Wed Jul 20 08:16:39 CDT 2005


Ryan Krauss wrote:

> I didn't know they were different.  A list of 
> scipy.linalg.lapack.flapack includes 
> scipy.linalg.lapack.flapack.dgeqrf but no dgerqf.  Maybe it was left out.
>
Pearu,

Is there any special reason why flapack  is  "incomplete"  ?

Nils
 

> Nils Wagner wrote:
>
>> Ryan Krauss wrote:
>>
>>> scipy.linalg.qr
>>>
>>> If you are using Ipython type scipy.linalg.  and hit tab and it 
>>> lists all the possibilities.
>>>
>> QR is not RQ. Am I missing something ?
>>
>> Nils
>>
>>> Nils Wagner wrote:
>>>
>>>> Harry Kalogirou wrote:
>>>>
>>>>> Hello!
>>>>>
>>>>> is there a function to compute the RQ decomposition of a matrix in
>>>>> scipy? I don't find something in the docs, but I think that lapack
>>>>> supports it.
>>>>>
>>>>> Thanks!
>>>>> Harry
>>>>>
>>>>>
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>>>>>  
>>>>>
>>>>
>>>> In LAPACK we have
>>>>
>>>> http://www.netlib.org/lapack/double/dgerqf.f
>>>>
>>>> Nils
>>>>
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>>
>>
>>
>>
>>
>>
>>
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