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	18976	February 19, 2025
13th ROOT Users Workshop - Valencia 17-21 November 2025: Registrations are Open! News The ROOT core developers would like to invite you to the 13th ROOT Users Workshop taking place in Valencia, at the Politechnical University of Valencia (UPV), from the 17th to the 21st of November 2025. The workshop i…	6	320	February 19, 2025
Welcome to the ROOT forum! News	1	8137	February 10, 2017
Erminate called after throwing an instance of 'std::out_of_range' what(): vector::_M_range_check: __n (which is 53861) >= this->size() (which is 53861) Newbie hist , root	0	2	July 28, 2025
RDataFRame: Should I use Cache() when creating multiple Histo3D plots over the same RDF ROOT python , rdataframe	1	7	July 28, 2025
Problems Reinstalling Root on MacBook After OS Upgrade ROOT	15	102	July 28, 2025
Combining different TTree entries with dataframes (repost) ROOT	1	8	July 28, 2025
THttpServer serve big binary files (bigger than RAM) on the fly (or CGI?) ROOT root , http	3	38	July 28, 2025
TH1 and RooDataHist asymmetric uncertainties differ ROOT hist , root , roofit	1	14	July 28, 2025
Handling zero bin contents Newbie	2	24	July 28, 2025
Setting bins of indentically 0 value to a specific color in a TH2 drawn with COLZ ROOT hist , root	4	22	July 28, 2025
SetNoExponent for TMultiGraph x-axis ROOT root	2	21	July 23, 2025
GeomBuilder library is missing in binary version Geometry	2	12	July 23, 2025
Simulating an MWPC with neBEM2d but the charges (e⁻/ions) aren't following the E-field lines as expected Garfield++	1	26	July 23, 2025
RPC simulation using stripreadout Garfield++	3	25	July 22, 2025
Which CMAKE settings were used for pre-built tarballs? ROOT	3	23	July 22, 2025
When will ROOT 6.36+ come out on conda-forge? ROOT	1	29	July 21, 2025
Will the conda-forge feedstock be maintained (2025)? ROOT	1	38	July 21, 2025
Need help with learning TTable in pyROOT Newbie python , root	6	20	July 20, 2025
TPaveStats is showing weird fit numbers ROOT hist , root	6	28	July 18, 2025
Can I use `TFile::Write()` to write a temporary object? ROOT root	6	31	July 18, 2025
Possible issue when cloning trees ROOT	19	60	July 18, 2025
Can not include header file in interactive ROOT ROOT	3	15	July 18, 2025
$SplitParam is also splitting the expressions Roofit and RooStats root	2	20	July 17, 2025
RooNLLVar absent in recent ROOT? ROOT roofit	11	57	July 16, 2025
Pbm with histo values reading Newbie	2	22	July 16, 2025
Is shared_ptr supported in class member derived from TObject? ROOT root	7	83	July 15, 2025
RooPDF generate overload problem Roofit and RooStats	5	44	July 15, 2025
Fit with constraints in TMinuit ROOT root	11	73	July 28, 2025
Removal of some CMake targets in Root 6.36 ROOT	4	36	July 28, 2025

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…

4

18976

February 19, 2025

13th ROOT Users Workshop - Valencia 17-21 November 2025: Registrations are Open!

News

The ROOT core developers would like to invite you to the 13th ROOT Users Workshop taking place in Valencia, at the Politechnical University of Valencia (UPV), from the 17th to the 21st of November 2025. The workshop i…

6

320

February 19, 2025

Welcome to the ROOT forum!

News