How to use lsqlin for best line or ploynormial fitting?

I have a set of X and Y data only.

X=[-11 -10 -9 -8 -6 -4 -2 0 1 2 ] Y=[ 3 5 1 4 6 10 12 12 12.5 12]

I want to calculate the best fitting line for the given set of coordinates. How can I use lsqlin to compute the parameters of the equation.

How can I use it for polynomials?

Answer 1

[Torsten]

Is there any advantage of lsqlin over polyfit you have in mind ?

Best wishes

Torsten.

[Tharindu Weerakoon]

I'm not sure about the advantages of lsqlin. But indeed ployfit can be used with independent variable X to calculate the Yhat for best fitting as far as I know.

If both X and Y are dependent Orthogonal linear regression will give the best solution over the polyfit (for line fitting only I think).

For nonlinear case, to have the best polynomial for given dependent set of X and Y polyfit will give a much easy solution but I don't have any idea about polynomial fitting technique other than fit command.