[Fwd: RE: [Fwd: Re: Array index out of bounds in svd.times()]]

[Ron Boisvert <boisvert@nist.gov>]

Sender: "Cleve Moler" <Cleve.Moler@mathworks.com>
Subject: RE: [Fwd: Re: Array index out of bounds in svd.times()]


The first line of the documentation for the SVD routine says it computes
the SVD of m-by-n matrices with m >= n.  You will have to compute the
SVD of
the transpose of your matrix, then interchange and transpose the
results.
  -- Cleve

-----Original Message-----
From: jama@nist.gov [mailto:jama@nist.gov] On Behalf Of Ron Boisvert
Sent: Friday, June 29, 2007 10:14 AM
To: Multiple recipients of list
Subject: [Fwd: Re: Array index out of bounds in svd.times()]




-------- Original Message --------
Subject: 	Re: Array index out of bounds in svd.times()
Date: 	Fri, 29 Jun 2007 11:27:12 -0400 (EDT)
From: 	Alexander Frey <alexanderfrey@gmail.com>
Reply-To: 	alexanderfrey@gmail.com
To: 	boisvert@nist.gov
References:
<a9628f570706290723g5387d8e2m3f9fae472001edc3@mail.gmail.com>



I have tracked the problem down to the point where I find that 
svd.getS() throws the arrayoutofbounds exception.
I builded the matrix from which I compute the SVD by passing the Matrix 
constructor a double[][] array. The array has 2 rows and 16 columns. 
Many of the entries are zeros and 1's .

Where could be the problem ?

Thank you, Alexander

2007/6/29, Alexander Frey <alexanderfrey@gmail.com 
<mailto:alexanderfrey@gmail.com>>:

    Hello,

    I get an array index out of bounds after trying to multiply 2
    matrices from svd.

    Matrix us = svd.getU().times(svd.getS());

    This should give me the multiplied matrix m = U * S  

    What do I do wrong ?


    Thank you, Alexander