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Re: curvefit [message #44408 is a reply to message #9041]

Tue, 14 June 2005 08:20

nolan.smith1
Messages: 12
Registered: June 2005

Junior Member

I spoke too soon!
So I have set up my function:
(the model I am trying to fit is y=a/((1+(x/b))^2) )

FUNCTION myfun,X,P
RETURN,P(0)/(1+(X/P(1))^2)
END

and then I try to run

result=MPFITFUN('myfun',x,y,0.5,0.01)

Where x,y are my x,y coordinates of the data that I am trying to fit,
0.5 is the first guess for P(0) and 0.01 is the first guess for P(1).
As you guessed it is not working. What am I doing wrong?

Thank you,
Nolan

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[Message index]

		Curvefit By: zanotti on Wed, 21 May 1997 00:00
		Re: Curvefit By: thompson on Wed, 21 May 1997 00:00
		Re: curvefit By: David Fanning on Tue, 07 January 2003 20:13
		Re: CURVEFIT By: Craig Markwardt on Wed, 02 June 2004 11:40
		Re: CURVEFIT By: K. Bowman on Wed, 02 June 2004 08:56
		Re: curvefit By: Paolo Grigis on Tue, 14 June 2005 09:16
		Re: curvefit By: nolan.smith1 on Tue, 14 June 2005 08:20
		Re: curvefit By: nolan.smith1 on Mon, 13 June 2005 21:02
		Re: curvefit By: nolan.smith1 on Mon, 13 June 2005 20:07
		Re: curvefit By: Craig Markwardt on Mon, 13 June 2005 15:24
		Re: curvefit By: kashyap on Mon, 13 June 2005 14:50
		Re: curvefit By: nolan.smith1 on Mon, 13 June 2005 12:59
		Re: curvefit By: Benjamin Hornberger on Mon, 13 June 2005 12:46

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