Re: sparse least squares


kem wrote:
> Hi, Thanks for your answer.
>
> My matrix A is -
> rectangular (something like 4n x n) ,
> sparse,
> unsymmetric
>
> umfpack works only with square as far as I know (am I wrong?)
> lsqr - gives an ok results but I was wondering if there is some package
> in C that does something similar to what Matlab does for solving such
> system (and they do sparse qr).


Uh... did you try lsqr? Oh yes, you did. Now why not try it in C? If
you can find google, then you'll be able to find source code.

.

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