28.4.7 HVL

Function

 y=y_0+\frac{Ae^{-\frac{0.5\left( x-x_c\right) ^2}{w^2}}w}{d\sqrt{2\pi }x_c\left( e^{1-\frac{dx_c}{w^2}}+0.5\left( 1+Erf\left( \frac{x-x_c}{w\sqrt{2}}\right) \right) \right) }

Brief Description

Haaroff-Van der Linde

Sample Curve

HVLCur.png

Parameters

Number: 5

Names: y0, xc, A, w, d

Meanings: y0 = base, xc = center, A = Area, w = width, d = distortion

Lower Bounds: w>0

Upper Bounds: none

Function File

fitfunc\HVL.fdf