Gradient calculation in GSLMultiFit

[moneta]

HI,
the problem was in the macro that I have attached in the post

Locate like command

Hi everybody, I’m just learning how to use root interface. There is a way to have a graphical integral of an histogram (like the PAW command “locate -i”) ?? cheers Paolo Zuccon.

The global chi2 function needs to be modified to not force the gradient calculation of all parameters. See the changes in the new macro which I attach to this post

Best Regards

Lorenzo
combinedFit2.C (5.99 KB)