Fwd: help for least squares

[andrea console]

Hi Torsten,

sorry but I don't see how arx can be the answer... Can you give me some hint? What about leasqr?

http://octave.sourceforge.net/optim/function/leasqr.html

2013/6/22 Torsten <address@hidden>

Maybe it is possible to rewrite the problem in such a way that arx ()
from the control package is doing the trick for you.

Torsten

On 22.06.2013 15:42, andrea console wrote:
> I have to solve, in least squares sense, a system of equations like:
>
> b_1 = [a_1, 1]*[x;y];
> b_2 = [a_2, 1]*[x;y];
> b_3 = [a_3, 1]*[x;y];
> b_4 = [a_4, 1]*[x;y];
> ...
> b_n = [a_n, 1]*[x;y];
>
> where b_i and a_i are sperimental values, thus affected by various
> sources of error.
> I know that 0<x<1 and nothing about y (apart that it should be quite small).
> How I can find the best solution that meets this conditions?
> thanks
>
>

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