Re: coefficient of determination (R^2) on polyfit

[Doug Stewart]

On Mon, Dec 16, 2019 at 3:23 PM Nir Krakauer <address@hidden> wrote:

or corr(q, y) to find the correlation between the fitted and original values.

@nir to do that you need:

x=[1 2 3];
y=[2 3 5];
[q s]=polyfit(x,y,1);
R=corr(x,y)
r2=R^2
yy=s.yf
RR=corr(y,yy)
plot(x,y,x,yy)

and RR is equal to R

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DAS