28.1.66 Extreme

Function

y=y_0+A\exp\left[-\exp \left[-\left(\frac{x-x_c}w\right)\right]-\left(\frac{x-x_c}w\right)+1\right]

Brief Description

Particular case of extreme function, Gumbel probability density function.

Sample Curve

CFF Image200.jpg

Parameters

Number: 4

Names: y0, xc, w, A

Meanings: y0 = offset, xc = center, w = width, A = amplitude

Lower Bounds: w > 0.0

Upper Bounds: none

Script Access

nlf_extreme(x,y0,xc,w,A)

Function File

FITFUNC\EXTREME.FDF

Category

Statistics, Peak Functions