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scripts default iconlorentzfit3 (Scripts) Publisher's description

LORENTZFIT3 fits a three parameter Lorentzian model to data (LORENTZVAL3 included in download)

a = lorentzfit3(x,y,a0)

LORENTZFIT3 fits the input Y(X) with a Lorentzian function of the form
Y'(X) = A1./((X - A2).^2 + A3) (i.e. 3-parameter model).

X : Independent variable values
Y : Dependent variable values [Y(X)]

A0 : Define initial guess [A1 A2 A3]

A : List of Lorentzian parameters [A1 A2 A3]

x = -16:0.1:35;
y = 19.4./((x - 7).^2 + 15.8) + randn(size(x))./10;
a = lorentzfit3(x,y);
figure; plot(x,y,'b.','LineWidth',2)
hold on; plot(x,lorentzval3(x,a),'r-','LineWidth',2)

Jered R Wells
jered [dot] wells [at] duke [dot] edu

See also: lorentzval3

REF: http://www.home.uos.de/kbetzler/notes/fitp.pdf

System Requirements:

No special requirements.
Program Release Status: New Release
Program Install Support: Install and Uninstall

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