Dear experts, I need to minimize a function subject to nonlinear constraints. I heard about Minuit, and that it is a great tool. But I read some old forums [2001-2003] where it was said that the Minuit cannot handle constraints. Since then has minimization subject to constraints been implemented i…

Hi Cesar, Yes, Minuit is a fantastic tool to minimize functions and of course it can handle constrains on the fitting parameters. Generally speaking it is used by several ROOT classes, like the TH1,2,… to fit functions to data distributions by minimizing a sum of squares (chisquare, Gaussian dat…

I am sure @moneta can help you, but have you looked at Roofit ?

Hi @couet , i heard about Roofit but I never really used it. Is it a good tool for minimization?

[image] Cesar1: Is it a good tool for minimization? Yes I think so :smiley:

Ok, thank you! I’ll have a look at it. Does it work in c++ and python, or just c++? And do you happen to know if there is some tutorial or example for a minimization subject to multiple constraints?