Hi,
I have a TGraphError fed with doubles and this will be fitted via TF1. Out of this fit I need the derivative for a certain value which I obtain by fit->Derivative(). Now for the very certain derivative of the one certain value I have to multiply the result with a separate factor, like some_number=(fit->Derivative)*factor.
Next I wanna’ plot the derivative in general via fit->DrawDerivative(). Up to here it all works fine except that the derivative is plotted without the factor I have to multiply to the deriviation of the one certain fit value.
I’m not sure if you can get my point, so briefly: I would like to make use of DrawDerivative but I need to multiply a factor somehow to that derivation.
Any ideas how to do that ? Thank you very much in advance!