RegModels.LogisticFit Function

Fits logistic equation to data.

Pascal

procedure LogisticFit(const B: TVec; const X: TVec; const Y: TVec; Constant: boolean = false; const Weights: TVec = nil);

Parameters	Description
B	Returns regression coefficients for logistic function.
X	Vector of independent variable.
Y	Vector of dependent variable.
Constant	If false, B[0] i.e. constant term in nominator is set to 0.0.
Weights	Weights (optional). Weights are used only if they are set.

The routine fits equations to data by minimizing the sum of squared residuals. The observed values obey the following equation: