[Scipy-tickets] [SciPy] #1735: linalg.eig test failure (test_singular)

SciPy Trac scipy-tickets@scipy....
Sat Sep 22 04:32:43 CDT 2012

#1735: linalg.eig test failure (test_singular)
 Reporter:  rgommers      |       Owner:  somebody   
     Type:  defect        |      Status:  new        
 Priority:  normal        |   Milestone:  Unscheduled
Component:  scipy.linalg  |     Version:  devel      
 Keywords:                |  

Comment(by rgommers):

 Or maybe the sign difference can actually cause values to be different
 after multiplication with the same eigen vectors:
         w, vr = eig(A,B)
         wt = eigvals(A,B)
         val1 = dot(A, vr)
         val2 = dot(B, vr) * w
 Would be useful if you could check that abs(w) and abs(wt) are almost
 equal Josef.

Ticket URL: <http://projects.scipy.org/scipy/ticket/1735#comment:1>
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