MATLAB: How to plot a simple curve fitting in Matlab

Question

Hi

I'm trying to use Matlab curve fittings. I used X=[1,2,3] and Y=[3,4,5] as known data and the codes introduced below:

f=fit(X,Y,'poly2')
plot(f,X,Y)

But it doesn't work! How should I edit it?

Answer 1

Make X and Y a column vector. Or use f=fit(X',Y','poly2') ;