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Re: Challenging question - array curve fitting [message #53320 is a reply to message #53148]

Tue, 03 April 2007 13:25

JD Smith
Messages: 850
Registered: December 1999

Senior Member

Just an unrelated followup question for Craig... MPFIT is (I hate to
say it) quite slow, in particular for problems like this, where you
want to simultaneously fit hundreds or thousands of things to complex
models. I know it wasn't designed for speed, and the things it does
are amazing (I particularly like arbitrary constraint expressions),
but I wonder, what do you think the chances of improving the speed
are? Would it require a fundamental rewrite, or is it more sensible
to fall back on a C or FORTRAN version of the library (I actually
don't know how the speed compares)? Should we lobby ITTVIS to throw
out their non-linear fitters, and incorporate MPFIT into compiled
code? Just want to get your perspectives. Thanks again for such a
wonderfully useful tool.

JD

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[Message index]

		Challenging question - array curve fitting By: Qing on Tue, 27 March 2007 01:37
		Re: Challenging question - array curve fitting By: Craig Markwardt on Thu, 29 March 2007 08:07
		Re: Challenging question - array curve fitting By: Qing on Tue, 03 April 2007 06:31
		Re: Challenging question - array curve fitting By: Craig Markwardt on Sun, 22 April 2007 19:49
		Re: Challenging question - array curve fitting By: Qing on Tue, 24 April 2007 05:49
		Re: Challenging question - array curve fitting By: JD Smith on Tue, 03 April 2007 13:25
		Re: Challenging question - array curve fitting By: Craig Markwardt on Sun, 22 April 2007 20:50

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