[Scipy-tickets] [SciPy] #1308: scipy.linalg.eig does not normalize eigenvector if B is given

SciPy Trac scipy-tickets@scipy....
Sat Oct 16 15:25:11 CDT 2010


#1308: scipy.linalg.eig does not normalize eigenvector if B is given
--------------------------+-------------------------------------------------
 Reporter:  nicki         |       Owner:  somebody
     Type:  defect        |      Status:  new     
 Priority:  normal        |   Milestone:  0.9.0   
Component:  scipy.linalg  |     Version:  0.8.0   
 Keywords:                |  
--------------------------+-------------------------------------------------
Changes (by warren.weckesser):

  * component:  Other => scipy.linalg


Old description:

> Hi all,
>
> the title say it all.
>
> Reproducible with
>
> ======================== *snip* ========================
> from scipy.linalg import eig
> import numpy as np
>
> A = np.array( [ [0.2, 0.4], [0.4, 2.05] ] )
> B = np.array( [ [1.0, 0.0], [0.0, 1.0] ] )
> print eig( A, B )
> ======================== *snap* ========================
>
> Cheers,
> Nico

New description:

 Hi all,

 the title say it all.

 Reproducible with

 {{{
 from scipy.linalg import eig
 import numpy as np

 A = np.array( [ [0.2, 0.4], [0.4, 2.05] ] )
 B = np.array( [ [1.0, 0.0], [0.0, 1.0] ] )
 print eig( A, B )
 }}}


 Cheers,
 Nico

--

Comment:

 Thanks for the report.

 You can enclose code in triple curly braces (that is, `{{{` and `}}}`) to
 preserve its formatting.  Also, when you file a ticket, don't forget to
 select the component, if you know what it is.

-- 
Ticket URL: <http://projects.scipy.org/scipy/ticket/1308#comment:1>
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