MATLAB: How to fit this curve curve fittingmatlab function x = [39.224 49.03 58.836 68.642 78.448 88.254 98.06 107.866 117.672 127.478 137.284]; y = [2.4218 3.9931 6.0817 8.7791 12.1994 16.4867 21.8260 28.4584 36.7052 47.0032 59.9637]; Best Answer The best model is the mathematical expression of the process that created those data. A power law fit appears to provide a reasonable approximation: x = [39.224 49.03 58.836 68.642 78.448 88.254 98.06 107.866 117.672 127.478 137.284];y = [2.4218 3.9931 6.0817 8.7791 12.1994 16.4867 21.8260 28.4584 36.7052 47.0032 59.9637];fcn = @(b,x) b(1).*x.^b(2);B = fminsearch(@(b) norm(y - fcn(b,x)), rand(2,1)); % Power Lawfigureplot(x, y, '.')hold onplot(x, fcn(B,x), '-r')hold offgridxlabel('X')ylabel('Y')producing: .
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