sparse matrix division (least squares)

[Rishi Amrit]

On Mon, Mar 30, 2009 at 6:02 PM, Ben Abbott <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
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