[SciPy-user] dstevx not implemented

Robert Kern robert.kern@gmail....
Sun Sep 2 14:52:10 CDT 2007

stefano borini wrote:
> Good morning to all,
> I just started tinkering with SciPy, and it looks very interesting. 
> However, I have a question and the searches I performed on the mailing 
> list or the web returned nothing valuable.
> I want to find some of the eigenvalues and eigenvectors of a quite large 
> tridiagonal matrix (around 20000x20000, maybe more). I used to do this 
> task in fortran using dstevx, but I noted that this function is not 
> exported to python, according to a comment in flapack_esv.pyf.src .
> I would like to ask is:
> - is this is due to technical or human-resources issues?

Human resources.

Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
 that is made terrible by our own mad attempt to interpret it as though it had
 an underlying truth."
  -- Umberto Eco

More information about the SciPy-user mailing list