I’m a new ROOT user. I read in the User Guide (p. 26) that one can make a 1-D or 2-D histograms with the functions TH3::ProjectionZ, TH3Project3D but how it works is not very well explicated.
Actually I have already some TH3D stored in a root file, and I want to extract information from and do some operation with physical quantities in it. It could be useful using the methods above?
Thank you in advance.