[General Information]

Function Name=Holliday	; name show up in the select function dialog
Brief Description=Holliday Model - a Yield-density model for use in algriculture
Function Type=Built-in		; source type, built-in, user-defined, external dll
Function Form=Expression	; function form;
Function Source=fgroup.Holliday
Number Of Parameters=3
Number Of Independent Variables=1
Number Of Dependent Variables=1


[Fitting Parameters]

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


[Independent Variables]

x = 


[Dependent Variables]

y = 


[Constants]


[Formula]

y = 1.0/(a + b*x + c*x^2)

[Constraints]

[Parameters Initialization]
sort( x_y_curve );
//smooth( x_y_curve, 2 );
x_y_curve = 1.0 / x_y_curve;
double coeff[3];
fitpoly( x_y_curve, 2, coeff);  
a = coeff[0];
b = coeff[1];
c = coeff[2];

[Initializations]


[After fitting]


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