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Hi Chris,

If you have SCIRun compiled with LAPACK, then you can get the eigenvalues / eigenvectors from any DenseMatrix:
        DenseMatrix *dm;
        ColumnMatrix *R, *I;
        DenseMatrix *Vecs;
        ...
        dm->eigenvectors(*R, *I, Vecs);
-- see SCIRun/src/Core/Datatypes/DenseMatrix.{cc,h} for details.

If you have a 3x3 Tensor, then there's an easier way:
        Tensor t;
        t.build_eigens_from_mat();
        Vector v1=t->get_eigenvector1();
-- see SCIRun/src/Core/Geometry/Tensor.{cc,h} for details.

Cheers,
Dave


On Jan 12, 2006, at 9:02 AM, Chris Butson wrote:

Is anyone aware of a function that is available in LinearAlgebra (or any other scirun module except MatlabInterface) that will calculate the eigenvalues of a matrix?

Thanks,
Chris

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• [SCIRUN-USERS] eigenvalues in LinearAlgebra, Chris Butson, 01/12/2006
  • Re: [SCIRUN-USERS] eigenvalues in LinearAlgebra, David Weinstein, 01/12/2006

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