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How can I separate out the event ID's in a TChain that have the same value
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3
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90
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April 29, 2025
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Accessing the source TChain/TTree of a RDataFrame
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1
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70
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April 29, 2025
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histo.Integral() vs looping tree to get sumw
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1
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73
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March 31, 2025
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Reading a large ROOT TTree fills RAM
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3
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169
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March 29, 2025
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Get data from a Zombie file
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2
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83
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March 24, 2025
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Combining root files with weighting
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4
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99
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March 21, 2025
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Memory consumption with string Define() in RDataFrame (PyROOT)
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2
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73
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March 21, 2025
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Calculating cosTheta from TLotentzVector
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1
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69
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March 19, 2025
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Sum of multiple spectra of different root files
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3
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77
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March 3, 2025
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Get TestTree and TrainTree after TMVA is completed
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1
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58
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February 14, 2025
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Bug or feature in TTree::Draw()?
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18
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174
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February 11, 2025
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2D plot from interactive ROOT
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3
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162
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January 27, 2025
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String branch cannot be read from TTree
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3
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67
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January 17, 2025
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Something wrong with CopyTree
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9
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115
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January 10, 2025
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Slow performance when using multithreading with TTaskGroup
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5
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82
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January 6, 2025
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Manual schema evolution: handling change of namespace
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1
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52
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December 18, 2024
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Access and modify TTree(Delphes)
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13
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149
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December 7, 2024
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Adding a new branch such that invariant mass that not exist in DelphesTree
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3
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83
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November 30, 2024
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Merge horizontally TTrees with TBranch as key
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3
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88
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November 21, 2024
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Same TSelector for different Trees
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1
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31
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November 20, 2024
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pyROOT Branch handling/filling
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4
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85
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November 11, 2024
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Fatal in <TBufferFile::WriteFastArray>: Not enough space left in the buffer (1GB limit). 4952997 elements is greater than the max left of 956626 aborting
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1
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293
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November 8, 2024
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SetDirectory(0) for RNTuple
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4
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96
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October 30, 2024
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chain->Draw("var:chain->GetTreeNumber()")
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4
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61
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October 11, 2024
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Suspect TTree::GetEntry() causing on and off segmentation violation
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9
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100
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September 30, 2024
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TClonesArray nested within TClonesArray
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5
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73
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September 28, 2024
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How to efficiently remove zero entries from DataFrame rows
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2
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606
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September 23, 2024
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Segfault with objects clearly there, TFile not closing
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2
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57
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September 20, 2024
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Filling a TTree Branch with a variable lenght array
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6
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158
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September 3, 2024
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Getting value from the leaf
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4
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75
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September 2, 2024
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