[GENERAL INFORMATION]
Function Name=ExpAssoc
Brief Description=Exponential Association
Function Source=fgroup.ExpAssoc
Function Type=Built-in
Function Form=Expression
Number Of Parameters=5
Number Of Independent Variables=1
Number Of Dependent Variables=1


[FITTING PARAMETERS]
Naming Method=User-Defined
Names=y0,A1,t1,A2,t2
Meanings=offset,amplitude,width,amplitude,width
Lower Bounds=--(I,Off),0(X,Off),0(X,On),0(X,Off),0(X,On)
Upper Bounds=--(I,Off),--(I,Off),--(I,Off),--(I,Off),--(I,Off)
Number Of Significant Digits=


[FORMULA]
y = y0 + A1*(1 - exp(-x/t1)) + A2*(1 - exp(-x/t2))


[CONSTRAINTS]

[Parameters Initialization]

int sign;
t1 = t2 = -1 / get_exponent(x_data, y_data, &y0, &A1, &sign);
A1 = sign * exp(A1);
y0 += A1;
A1 = A2 = -A1 / 2;

[CONSTANTS]


[INITIALIZATIONS]



[AFTER FITTING]



[INDEPENDENT VARIABLES]
x=


[DEPENDENT VARIABLES]
y=


[CONTROLS]
General Linear Constraints=Off
Initialization Scripts=Off
Scripts After Fitting=Off
Number Of Duplicates=N/A
Duplicate Offset=N/A
Duplicate Unit=N/A

