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	19531	February 19, 2025
Welcome to the ROOT forum! News	1	8288	February 10, 2017
RooFit variables not recognised Newbie	3	30	May 8, 2026
Warning from TLegend and how to solve it ROOT graphics , root	2	13	May 8, 2026
How to calculate nuclear stopping energy in gas Garfield++	3	31	May 7, 2026
Type name error after RNTuple Merging ROOT root	6	42	May 4, 2026
Homebrew and TUnfold how to? ROOT	7	51	May 4, 2026
Error in <TBufferFile::WriteByteCount>: bytecount too large (more than 1073741822): TMVA TMVA	1	18	May 1, 2026
chi2FitTo not limited by limiting range Roofit and RooStats	6	36	April 30, 2026
Could not create the Minuit2 minimizer Newbie	22	113	April 30, 2026
ROOT 6.26.18 and 6.28.14 binary distributions Python problems ROOT python	1	36	April 30, 2026
TBufferMerger fails to write histograms to output file for Alma Linux ROOT hist	8	78	April 27, 2026
ROOT 6.36.12 is out! News releases	1	47	April 27, 2026
About TF1 interface and the fitting function for the ROOT::Fit::Fitter Newbie	3	47	April 27, 2026
Trying simulationo of the hole(mesh) in the garfield++ Garfield++ root	9	88	April 27, 2026
TRotation in a Tree Newbie	4	39	April 26, 2026
Creating a custom gas with imported transport data Garfield++	12	81	April 24, 2026
There is GraphicalCut button in ROOT 6.38 WebUI ROOT	4	40	April 24, 2026
Find which lib to link against Newbie	3	24	April 24, 2026
Error in ComponentGrid::GetData? Garfield++	4	52	May 7, 2026
Call to constructor of 'TF1' is ambiguous Newbie	2	34	April 23, 2026
ROOT fails on my Mac after an update ROOT	8	77	May 6, 2026
Magboltz attachment coefficients at low electric field strength Garfield++	3	32	May 5, 2026
Unknown issue with Tree /reading ROOT	12	27	May 5, 2026
Efficiency issue when reading a persistent branch from file Newbie	3	35	April 21, 2026
Critical error detected c0000374 with minimal example Newbie	9	45	April 20, 2026
TTreeProcessorMT deadlock in ROOT cmd line ROOT	4	37	May 1, 2026
Intermittent shutdown memory crash in compiled ROOT app (bus error / segfault / malloc smallbin corruption) with minimal reproducer ROOT	3	38	April 29, 2026
[Windows] ROOT 6.38 + Python 3.14: No module named 'libcppyy' [CEA 52284] ROOT python , windows	4	30	April 29, 2026
A memory leak with RDataFrame.AsNumpy() and vector<vector<vector<float>>> ROOT python	10	122	April 28, 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…