Please, read the tutorials graph.C and myfit.C You create a TGraph(n,x,y) object with your array of points, then invoke TGraph::Fit with your user defined function. Rene Brun On Fri, 30 Apr 1999, Markus Weiss wrote: > Hi, > > I like to fit a function of two values f(x,y) with 3 parameters > to datapoints of > > x1, y1, f1 > x2, y2, f2 > .... > > I tried the ntuple-class, and TF2 for the usersupplied function, > but seem not to get the desired result. Basically I'm lost... > > Has anyone solved this rather simple problem ? > > Thanks, Markus. > > -- > --------------------------------------------------------------------- > Markus Weiss "Ah elbereth glithoniel > BESSY-2 Projektteam silvren penna miriel" > e-mail: weiss@abbe.exp.bessy.de phone: +49-30-6392-2941 > --------------------------------------------------------------------- >
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