[General Information]

Function Name=Rational3		; name show up in the select function dialog
Brief Description=Rational Function, type 3
Function Type=Built-in		; source type, built-in, user-defined, external dll
Function Form=Expression	; function form;
Function Source=fgroup.Rational3
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 = (b + x)/(a + c*x)

[Constraints]

[Parameters Initialization]
sort(x_y_curve);
smooth(x_y_curve);	
c=1/yatasymt(x_y_curve); 
a=-c*xatasymt(x_y_curve);
x_y_curve = x_y_curve*(a+c*x_data);  	
double coeff[2];
fitpoly(x_y_curve,1,coeff);
b=coeff[0];

[Initializations]


[After fitting]


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

