Curve fitting a power law function a(x^b) + C

Greetings. I have been trying to fit a power law function through a data set through: p = polyfit(log(x),log(y),1) This gives me the values for coefficient a and b, but I cannot figure out how to get c. Any help or advice would be greatly appreciated. Thanks.

Answer 1

[Torsten]

Use lsqcurvefit.

Best wishes

Torsten.

[Tom]

Thanks for the prompt response. How exactly would I initialize the equation that I would like to fit? Thanks.

[Torsten]

fun=@(x,xdata)x(1)*xdata.^x(2)+x(3);

Best wishes

Torsten.