[SciPy-user] problem using umfpack.lu()

[Giampaolo Cuoghi]

Hi all,

I'm trying to solve the problem of compute the determinant of a sparse 
matrix, as I've written in the previous mail.

I find that the LU decomposition can be useful for this task but when I 
use umfpack.lu(A) for A complex sparse matrix, this error appears:

"matrix must have float64 values"

If A is a real matrix no error appears.

Can someone help me?

Thanks.

Giampaolo Cuoghi

Physics Department, University of Modena (Italy)