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Subject: Re: Double exponential decay fit
Date: Wed, 14 Jan 2009 22:13:02 +0000 (UTC)
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OK,
Sigmaplot is using the Marquardt-Levenberg algorithm to find the
coefficients (parameters) of the independent variable(s) that give the &#8220;best fit&#8221;
between the equation and the data. Interestingly, you can choose the same algorithm in curve fitting tool box under fit option. However, chossing this option still does not give me the same result. It's look like sigmaplot get that the signal decaying converge to zero while Matlab doesn't. There must be a way to set this parameter but I can't see it in the Fit options window... And I pretty much try everything in that window...
Please, HELP!!
Thanks,
Jean-Seb