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	19367	February 19, 2025
Welcome to the ROOT forum! News	1	8218	February 10, 2017
What are the most difficult C++ topics to learn? Newbie	0	2	February 5, 2026
Cling discover "typedef" and "using" instructions ROOT	1	8	February 5, 2026
TCanvas frame showing ROOT	1	6	February 5, 2026
Issues with the Chrome based Root Browser ROOT	11	60	February 5, 2026
Is there non blocking equivalent to TMethodCall::Execute? Cling	7	44	February 5, 2026
RDF progress bar changes printout precision ROOT	2	31	February 5, 2026
ROOT Advanced Course, 25th March 2026 News python , rdataframe , root-course , uhi	1	29	February 5, 2026
Unexpected result with RooFFTConvPDF after ROOT 6.32 Roofit and RooStats root	6	56	February 4, 2026
Issue with multible gas volumes as active medium Garfield++ garfield	4	18	February 4, 2026
Error analysis for Magboltz or gas file Garfield++	3	25	February 4, 2026
Problems Loading Root to MacBook ROOT	14	130	February 3, 2026
Field lines crossing conductor plates in neBEM Garfield++	4	46	February 3, 2026
How to get different variable rankings for TMVA BDTG TMVA root	3	52	February 3, 2026
Set TCanvas size in batch mode ROOT	17	559	February 3, 2026
Installation error at make step Garfield++	1	24	February 3, 2026
JSROOT: Some RNTuples are not fully displayed ROOT jsroot	6	44	February 3, 2026
C++ macro to write Branch() for each variable in class ROOT tree , root	5	29	February 2, 2026
Roofit differences in LCG_105 and LCG_107 Roofit and RooStats root	1	12	February 2, 2026
Understanding meaning of variables in pyTorch BatchGenerator tutorial ROOT root	3	28	January 30, 2026
Fit-Non-Convergence ROOT	3	45	January 30, 2026
redirectServers - Server not redirected Roofit and RooStats	5	40	January 29, 2026
Electrons can not drift in xeon Garfield++	1	23	January 29, 2026
Adding custom classes to root with Visual Studio ROOT	33	83	January 29, 2026
Silent crash when adding key to nlohmann::json object with semicolon omitted ROOT bug , cling	3	39	January 28, 2026
How to detect when THttpServer fails to start? ROOT http	5	28	January 27, 2026
THttpServer: force requests with URL beginning by "custom" to go to MissedRequest ROOT http	3	27	January 27, 2026
Likelihood Ratio Function (without Fit) Roofit and RooStats	3	56	January 26, 2026
Roofit: PDFs with different domain in the same model (e.g. gauss + lognormal) Roofit and RooStats	9	90	February 5, 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…