[Numpy-discussion] SVD problem - matrices are not aligned
Charles R Harris
Sat Oct 23 21:21:47 CDT 2010
On Sat, Oct 23, 2010 at 7:00 PM, Daniel Wagner <daniel.wagner.ml@
> I'm a new subscriber of this list. I hope to directly start with a question
> is ok...
> My question or problem:
> I've a matrix A which is calculated from the data b. The shapes of these
> matrices are:
> (954, 9)
> I calculate the SVD of A:
> >>> U, w, V = numpy.linalg.svd(A, full_matrices="True")
> (954, 954)
You want full_matrices set false so that U has shape (954, 9).
> If I'm doing the check of the SVD results using:
> >>>numpy.allclose(A, numpy.dot(U, numpy.dot(W, V)))
> I get this error:
easier, allclose(A, dot(U*w, V) )
"ValueError: matrices are not aligned"
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