ROOT Forum

Topic	Replies	Views	Activity
Newbie forum for when you're not sure News If you’re new to ROOT, C++, data analysis etc, and you hesitate to ask your question, then please ask it in the Newbie section, where nice people help and we have special rules to be more welcoming. Don’t hesitate, jus…	4	19643	February 19, 2025
Welcome to the ROOT forum! News	1	8343	February 10, 2017
Question about the calculation of chisquare for 2D roofit Roofit and RooStats	1	3	July 9, 2026
Segfault with matplotlib and pyroot ROOT bug	10	21	July 9, 2026
AvalancheMicroscopic RAM increased usage in newest commits Garfield++	1	9	July 9, 2026
PDG Database and Nuclei ROOT	4	359	July 9, 2026
Problems filtering a vector with a scalar Newbie python , root , rdataframe	3	45	July 8, 2026
Machine Learning on a Large Dataset using PyTorch: RDataFrame vs. uproot? ROOT python , rdataframe	5	602	July 8, 2026
Question about the scaling factor in ROOT's weighted Poisson log-likelihood (WLS fit) Roofit and RooStats root	1	15	July 8, 2026
Language Server for PyROOT ROOT python	3	40	July 7, 2026
Problem with Silvaco TCAD to Garfield++ Garfield++	6	82	July 6, 2026
Share RNTupleReader field addresses across multiple files ROOT io , tree , root	6	62	July 3, 2026
Compilation error while trying to build ROOT via source with GPU enabled ROOT	5	73	July 2, 2026
Possible bug in schema evolution with TClonesArray ROOT bug	6	64	June 30, 2026
Unexpected behavior of nested for loops when loading a macro with .L Newbie	8	77	June 30, 2026
Could something like TMapFile work with RNTuples? ROOT	2	42	June 29, 2026
Ignore fields when reading an RNTuple ROOT io , tree , root	4	52	June 25, 2026
Using numba declare for python MVA node processing ROOT python , rdataframe	7	68	July 9, 2026
Segfault with pyroot and matplotlib Newbie	2	80	June 24, 2026
Rescaling text with window size ROOT	10	83	July 8, 2026
Building problem with GPU Garfield++	5	79	July 8, 2026
Draw("surf3 same") on top of lego plot Newbie	4	54	June 22, 2026
Location of dropdown menu from TCanvas and context info displaced ROOT root	22	120	July 6, 2026
TChain::Add(TChain*) leaves GetEntries() reporting a wrong, too-small value ROOT tree , root	6	72	July 3, 2026
TTree::GetMinimum/GetMaximum only scan one file of a friend TChain ROOT	4	59	July 2, 2026
Is root running on MacOSX 26? ROOT root	3	74	July 1, 2026
TF1 constructor broken in ROOT 6.40.02 ROOT	10	87	July 1, 2026
SetBranchStatus - third flag? Evolution Proposals, Apps & Ideas	4	95	June 16, 2026
A possible new approach for faster repeated selections in HEP workflows Evolution Proposals, Apps & Ideas	0	32	June 15, 2026
ROOT 6.38.06 is out! News	1	35	June 12, 2026

Newbie forum for when you're not sure

If you’re new to ROOT, C++, data analysis etc, and you hesitate to ask your question, then please ask it in the Newbie section, where nice people help and we have special rules to be more welcoming. Don’t hesitate, jus…