[General Information]

Function Name=BETMod	; name show up in the select function dialog
Brief Description=Modified BET Model
Function Type=Built-in		; source type, built-in, user-defined, external dll
Function Form=Expression	; function form;
Function Source=fgroup.BETMod
Number Of Parameters=2
Number Of Independent Variables=1
Number Of Dependent Variables=1


[Fitting Parameters]

Naming Method=user-defined
Names=a,b
Lower bounds=--,--
Upper bounds=--,--
Meanings=coefficient,coefficient


[Independent Variables]

x =


[Dependent Variables]

y =


[Constants]


[Formula]

y = x/(a+b*x-(a+b)*x^2)

[Constraints]

[Parameters Initialization]
sort(x_y_curve);
smooth(x_y_curve);
Dataset dx;  	
x_y_curve = x_data/x_y_curve;  	
double coeff[3];
fitpoly(x_y_curve,2,coeff);
a=coeff[0];
b=coeff[1];

[Initializations]


[After fitting]


[Controls]
General Linear Constraints=Off
Initialization scripts=Off
Scripts After fitting=Off

