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Eigenvalue trajectory using DGEEV

PostPosted: Sun Jan 29, 2012 11:49 am
by p3tris
Hi,

I have an evolving matrix A. I would like to plot the eigenvalue trajectory of the matrix over 5-6 steps. If I use the DGEEV subroutine the series in which the eigenvalues are saved in the WR and WI vectors will be always the same? I mean the first number in WR in one run is the real part of the same eigenvalue if I run again? In the source file it says:

"Complex conjugate pairs of eigenvalues appear consecutively with the eigenvalue having the positive imaginary part first."

Thanks in advance,
Petros