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Re: Newbie's question [message #45914 is a reply to message #45912]

Thu, 20 October 2005 07:10

Paul Van Delst[1]
Messages: 1157
Registered: April 2002

Senior Member

ChiChiRuiz@gmail.com wrote:
> Thank you for your inputs. I'll try poly_fit and find MPFIT!

BTW, the MPFIT code has a drop in replacement for CURVEFIT -- I think it's called
MPCURVEFIT. Anyway, another plus is that it's much much much faster than IDL's CURVEFIT --
at least it was for the fits I was performing:
z(x,y) = c0(y) + c1(y).x^c2(y) + c3(y).x^c4(y) (where c4 ~ 2*c2)
I fit 1000's of channels of data in a flash with Craig's MP Code. CURVEFIT didn't converge
most of the time, and when it did it took forever (i.e. go and get a coffee, come back,
and it would still be working on a single channel).

cheers,

paulv

--
Paul van Delst
CIMSS @ NOAA/NCEP/EMC

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[Message index]

		Re: Newbie's question By: JD Smith on Thu, 20 October 2005 17:07
		Re: Newbie's question By: James Kuyper on Thu, 20 October 2005 15:08
		Re: Newbie's question By: ChiChiRuiz@gmail.com on Thu, 20 October 2005 13:18
		Re: Newbie's question By: James Kuyper on Thu, 20 October 2005 11:41
		Re: Newbie's question By: Paolo Grigis on Thu, 20 October 2005 08:10
		Re: Newbie's question By: Paul Van Delst[1] on Thu, 20 October 2005 07:10
		Re: Newbie's question By: ChiChiRuiz@gmail.com on Thu, 20 October 2005 06:53
		Re: Newbie's question By: Paul Van Delst[1] on Thu, 20 October 2005 06:44
		Re: Newbie's question By: peter.albert@gmx.de on Thu, 20 October 2005 04:02
		Re: Newbie's question By: Paolo Grigis on Thu, 20 October 2005 00:33
		Re: Newbie's question By: ChiChiRuiz@gmail.com on Fri, 21 October 2005 09:58
		Re: Newbie's question By: James Kuyper on Fri, 21 October 2005 05:55

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