RE: Interpolating with f(x) = a*x^b, where b might be a non-integer?

[Damian Harty]

> > Hello, given a set of measurements, I would like to find the best
> > fitting function of the form:
> >
> > f(x) = a*x^b, where a, b might be non integers. Here is a good
> example
> > of such a fitting:
> >
> > http://www.flybrushless.com/prop/view/38
> >
> > Is there any toolbox in octave that I could use to easily obtain the
> a
> > and b coefficients given a set of measurements?

Any reason you wouldn't take logs and fit a straight line?

   log(f(x) = log(a)+log(x).b

Looks quite like "y=mx+c" to me?

Damian Harty