TH3::ProjectionZ, TH3::Project3D

Hello everyone,

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.


Do you still have this problem? Can you be more specific in what you are trying to do and how it failed for you?



now it works fine. Thanks :slight_smile: