Hello,
Is it possible to add a value to a leaf? for example, I have a leaf named “momentum” with these given values:
root[0] tree->Show(0); ======> EVENT:0 EventMetaData = (EventMetaData*)0x6294960 MCParticles.m_momentum_x = 0.456297, 0.346359, 0.109938, -1.189059
And I would like to add some value to the end of this array.
Thanks
A TTree is a write-once, read-many time structure, so you can not modify the value ‘in place’.
The tutorials: tutorials/tree/copytree3.C gives some hints on how you could copy the original into a new tree while modifying the value during the copy.
Cheers, Philippe.
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