Hi ROOT Family, It is me again. I saved my data to a tree with two branches x1 and x2. And I copied my x2 branch to an array c[ ] (with the amount of 48777 data). I used the “unique” function to delete the duplicate data, and I only needed the non-duplicate data, so I saved all my non-duplicate d…

dastudillo March 30, 2024, 5:08am 2

Branches with different number of entries ROOT

When you fill branches one by one you must also set the number of entries in teh Tree itself via t->SetEntries(number of entries); My recommendation: do not try to fill a tree with branches having different number of entries. In your simple case, always call t->Fill(). The compression algorithm will take care of eliminating entries with teh same values. Rene

Adding branch with a different number of entries ROOT

Hi! Is it possible to an existing tree to add a new branch to another (smaller) number of entries? If so, how to do it right? Thank you!

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Adding tree branches problem