[Numpy-discussion] finding eigenvectors etc

Matthieu Brucher matthieu.brucher@gmail....
Wed Feb 20 02:19:20 CST 2008


>
> >Your matrix is almost singular, is badly conditionned,
>
> Mathew, can you explain that..i didn't quite get it..
> dn
>

The condition number is the ratio between the biggest eigenvalue and the
lowest one. In your case, it is 10E-16, so the precision of the double
numbers. That means that some computations that depend on this ratio (like
inversions) can lead to numerical errors. In your case, it is OK, but you
should keep in mind this kind of trouble (read what you can on numerical
computations ;))

Matthieu
-- 
French PhD student
Website : http://matthieu-brucher.developpez.com/
Blogs : http://matt.eifelle.com and http://blog.developpez.com/?blog=92
LinkedIn : http://www.linkedin.com/in/matthieubrucher
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