CalcRegModel

The procedure CalcRegModel calculates a regression model of a particular type which is specified by the parameter RegModel. The parameter PolyOrder is only used for polynomial models (RegModel = rmPolynomial or RegModel = rmCenteredPoly) and is ignored in all other cases.

Actually the CalcRegModel method serves as a convenient "binder" of most of the regression methods available in TCurveFit. The only difference to the individual methods listed in the following table is that the found regression parameters are not returned directly but have to be retrieved via special properties such as FitQual, ModelPar and CPXShift.

RegModel Parameter	Short Description	Details
rmNone	undefined model
rmLinear	linear (straigt line) model	CalcLinFit
rmParabolic	parabolic model	CalcParabolFit
rmGaussian	bell shaped Gaussian curve	CalcGaussFit
rmReciLin	reciprocal linear model	CalcReciLinFit
rmHyperbolic	hyperbolic model	CalcHyperbolFit
rmReciHyperbolic	reciprocal hyperbolic model	CalcReciHyperbolFit
rmLog	logarithmic model	CalcLogFit
rmReciLog	reciprocal logarithmic model	CalcReciLogFit
rmPower	power function	CalcPowerFit
rmExpo	exponential function	CalcExponentialFit
rmHoerl	Hoerl function	CalcHoerlFit
rmCircle	circle	CalcCircleFit
rmPolynomial	polynomial model (order 1 to 10)	CalcPolyFit
rmCenteredPoly	centered polynomial model (order 1 to 10)	CalcCenteredPolyFit

The data points have to be entered by using the procedure EnterStatValue. Do not forget to reset the statistics calculation before entering any new data sets (use Init)