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EigenvalueDecomposition class problems and fixes??

MathNet.Numerics.LinearAlgebra.EigenvalueDecomposition. I downloaded MathNet.Iridium-2008.8.16.470 to try it for some Eigenvalue work, and had 2 problems in SymmetricDiagonalize( ). First, a Matrix like: { 5 -2 -4 } { -2 2 2 } { -4 2 5 } (these are rows) would throw an IndexOutOfBounds Exception, because...

Posted to Math.NET Mathematics Library (Forum) by Leon Bass on 10-05-2009
Bug: The crossproduct has wrong indexs.

Hi! Me again with a bug (at least I think so). /// <summary> /// Cross product of two 3-dimensional vectors. /// </summary> /// <returns> /// Vector ret = (u[2]v[3] - u[3]v[2], u[3]v[1] - u[1]v[3], u[1]v[2] - u[2]v[1]). /// </returns> /// <seealso cref="CrossMultiply"...

Posted to Math.NET Mathematics Library (Forum) by marX on 04-16-2008
Re: Bug in Matrix.CopyToArray() method

Thanks for reporting! Confirmed and tracked as IRID-124 . I think I should raise the priority of writing more unit tests of already existing code...

Posted to Math.NET Mathematics Library (Forum) by Christoph Rüegg on 04-04-2008
Re: Extrapolation IndexOutOfRangeException

This is a bug, thanks for reporting. It is tracked as IRID-119 . I was able to repro it, and fixed it in revision 410.

Posted to Math.NET Mathematics Library (Forum) by Christoph Rüegg on 04-02-2008
Re: Possible bug in Complex class?

Your issue around Complex Power should be fixed in revision 382, see IRID-107 . However, I didn't touch other methods. Note that Complex Power still retuns NaN, in the case (0) ^ (z) where Re(z) = 0 but Im(z) != 0.

Posted to Math.NET Mathematics Library (Forum) by Christoph Rüegg on 03-12-2008
Re: ArbitraryDistribution - possible bug

Correct, that's bug IRID-98 and will be fixed in the next release. Thanks for reporting!

Posted to Math.NET Mathematics Library (Forum) by Christoph Rüegg on 03-05-2008
Re: Possible bug in Complex class?

Yes, I think you're right. I'll have a look at all this methods and check for these cases. I'll let you know here when I create a bug in the issue tracker .

Posted to Math.NET Mathematics Library (Forum) by Christoph Rüegg on 02-08-2008
Re: Possible bug in CholeskyDecompostion solve

This bug has been fixed today in revision 296.

Posted to Math.NET Mathematics Library (Forum) by Christoph Rüegg on 01-09-2008
Re: Possible bug in CholeskyDecompostion solve

FYI: I've just updated the linear algebra unit tests; they now repro the cholesky issue and fail (LinearAlgebraTests.AllTests and BugRegression.IRID90_CholeskySolve). Btw, the bug is tracked as IRID-90 (not 61).

Posted to Math.NET Mathematics Library (Forum) by Christoph Rüegg on 01-08-2008
Re: Polynomial Copy Constructor

Thanks again for reporting. The issue is tracked as IRID-92 and has been fixed today in the subversion repository revision 292. It will also be included in the next official release.

Posted to Math.NET Mathematics Library (Forum) by Christoph Rüegg on 12-26-2007

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