see tutorial fitExclude.C Rene Brun On Thu, 8 Jul 2004, Alberto Pulvirenti wrote: > Dear ROOTers, > > I encountered a problem which I wish to solve. > I have a plot which looks like the sum of two gaussians with similar > mean and quite different constant/sigma values. > I would like to fit such a histogram with the sum of two gaussians. > > Given that one of the two is smaller and wider, I wished to try to fuit > a gaussian in the middle part of the histo (and I know how to do this) > And the other should be fitted at the same time, in the two periperical > regions. > > Say, if we divide the histo into three regions: (-A, -0.1), (-0.1, 0.1) > and (0.1, A), how can I perform a fit with the same function, and > simultaneously in the two ranges (-A, -0.1) + (0.1, A) ? > (I tried with two separate gaussian fit on the two intervals, but the > result is not satisfactory). > > Thanks. > >
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