Radial distribution

How do you isolate/plot just the radial distribution of a 2D histogram that has all physics processes graphed?

No idea what you’re talking about: TTree

Like pick out just a section of a 2D histogram from the center to one edge and separate the different physics processes

This depends on your particular TTree structure so I think you need to talk to your colleagues how to “separate the different physics processes”.

Do you know how to just make a graph of just one section of the 2D histogram? from the center to one edge?

For histograms, you can use: TH1::SetAxisRange

OK thanks I’ll look into that.

Maybe these drawing options can help?
https://root.cern.ch/doc/master/classTHistPainter.html#HP19

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