Lorentz

Purpose

Calling Sequence

y = Lorentz(x, para)

INPUTS

Input		Description
	x	Vector of values at which to calculate the Lorentz signal

Optional INPUTS

Input		Description	Default Value
	para	[], [c a t] or [c0 a0 t0 c1 a1 t1]	[]

OUTPUTS

Output		Description
	y	Vector containing values of the Lorentz signal calculated at values in the vector x

Description

Lorentz() calculates the value of the Lorentz
signal which is defined as follows

y = 1/(1+x^2) if para =[]
y = c/(1+(x-t/a)^2) if para = [c a t]
y = c0/(1+(x-t0/a0)^2) + c1*(x-t1)/(1+(x-t1/a1)^2)
if para = [c0 a0 t0 c1 a1 t1]

Example

x = linspace(-10,10,100);
y = Lorentz(x);
plot(x,y,'r'); xlabel('x'); ylabel('Lorentz(x)')

DigComT Licensee: Chris Heegard 

                  Native Intelligence 

Last modified: Tuesday, January 11, 2000
Date created: Tuesday, January 11, 2000

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