sparse matrix division (least squares)

[David Bateman]

Rishi Amrit wrote:
> On Mon, Mar 30, 2009 at 6:02 PM, Ben Abbott <bpabbott at mac.com 
> <mailto:bpabbott at mac.com>> wrote:
>
>
>     On Mar 30, 2009, at 12:05 PM, Rishi Amrit wrote:
>
>         Hi,
>
>           I have two sparse matrices (say A and B).
>
>         > size(A)
>         ans =
>           2400  2400
>
>         > size(B)
>         ans =
>           2400 2440
>
>         I wish to implement the least squares operator : A\B
>
>         When I run this in MATLAB, I get
>
>         > size(A\B)
>         ans =
>          2440  2400
>
>         and A\B is a sparse matrix.
>
>         When I implement this in octave, I get
>
>         > A\B
>         ans = Compressed Column Sparse (rows = 0, cols =0, nnz = 0)
>
>         which is empty.
>
>         Is there a separate function in octave for this operation on
>         sparse matrices ?
>
>         Thanks,
>
>         Rishi
>
>
>     What version of Octave are you running?
>
>
> I am running the latest stable version: 3.0.3
>
> Thanks,
>
> Rishi
>
Where did you get your version of Octave? Is it built with SuiteSparse? 
I don't see this issue with 3.0.3 on my machine

D.



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