Hi,

I have (x,y) data that I want to fit to the formula
y = a * x^b
to determine a and b. How can I do it? The current
manual only lists linear fit and polynomial fit.

Or, putting it in a more general setting, is there a
module to do fitting to an arbitrary function?
It would be something like

pars = fit(x, y, func)

where func is a function like

y = func(x, pars)

with pars a 1-D array.

Thanks,
Ping

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