P.S. This curve is a TGraph object. Maybe this question can be explained as: If I have a 2D histogram and a TGraph object (the curve), how to project this histogram to thie TGraph object? Exaos Lee ??: > Dear rooter, > As the title, how to project a 2D histogram to a curve? > E.g., I have the attached curve and a 2D histogram. I want to project > the data to this curve to get a TH1F histogram. Of course, the data > scattering on the 2D histogram are close to this curve. > I didn't find any examples from the $ROOTSYS/test and > $ROOTSYS/tutorials. I hope someone can help me. > > Best regards. > > Exaos
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