On Sun, 8 May 2005, Grant Edwards wrote: > On 2005-05-08, Tom Anderson <[EMAIL PROTECTED]> wrote: > > > I'd like to fit a curve (a rectangular hyperbola, in fact) to > > some data points as part of a program i'm writing. Can anyone > > suggest a package which would help me do this? > > I use the LeastSquares function in Scientific Python: > > http://starship.python.net/~hinsen/ScientificPython/
I'll check that out, cheers. > > A bit of googling suggests that SciPy might be what i want. Does that > > sound likely? > > Sure. I ended up using scipy.optimize.minpack.leastsq, and it works brilliantly. The interface is a bit awkward - it wants a function from a guess at the parameters to a list of residuals; i'd rather give it a function from parameters + x-coordinate to y-coordinate plus a set of points, and have it work out the residuals for me - so i wrote a little wrapper to make it suit me better, and now i'm cooking with gas. The only problem is that the optimisation doesn't converge, but i think that's probably a bug in my code! tom -- Punk's not sexual, it's just aggression. -- http://mail.python.org/mailman/listinfo/python-list
