ROOT Forum

Topic	Replies	Views	Activity
Retrieving the pointer to a TH2 histogram from TTree ROOT tree , hist , root	4	239	October 13, 2022
Python (pip) packaging the software based on ROOT + PyROOT ROOT	7	983	October 13, 2022
Counting the number of entries in a TCutG Newbie hist , root	3	355	September 29, 2022
Retrieve TVectorD from a root file Newbie	8	217	September 28, 2022
`Float_t blah[]`, `TTreeReaderArray` and `RVec` interplay ROOT tree , root , rdataframe	2	247	October 13, 2022
Illegal Leaf Message When Reading From A Database to Skim ROOT	2	370	October 12, 2022
Histogram on txt file instead that on a plot ROOT	9	300	October 12, 2022
What is an X509_USER_PROXY, what does it mean that it isn't set and how do I fix this error? ROOT	5	508	October 12, 2022
Pythia.h is not there ROOT root	2	184	October 12, 2022
Using ROOT as a jupyter kernel in VSCode on Windows 11 ROOT jupyter	4	591	October 12, 2022
RooFit binned Likelihood fit not taking into account bin-errors Roofit and RooStats python , root , roofit	3	760	October 12, 2022
Why I use tree->Draw("branch") but got nothing? Newbie	1	155	September 28, 2022
Python-CPP Interoperativity: Accessing TTree generated by external macros in python (conda environment) Newbie root	1	292	September 28, 2022
Matrix multiplication in two files Newbie	2	325	September 27, 2022
When does the TObject pointed to by TFile::Get(name) go out of scope? Newbie	6	418	September 27, 2022
Transfer covarariance matrix to an output file Roofit and RooStats	7	466	October 11, 2022
Systematics on upper limits with RooStats Roofit and RooStats	2	217	October 11, 2022
Embedded cling error with latest xcode Cling	37	13662	August 22, 2022
Installing root with XCode 14 on MacOS 12.6 ROOT root	10	2182	October 11, 2022
Using files with SWAN/Spark ROOT python , root , rdataframe	6	654	October 11, 2022
Error Macroname.c not found in path ROOT	2	397	October 11, 2022
Error building root Freetype ROOT	2	659	October 11, 2022
No of signal and bkg events in signal region Roofit and RooStats	3	295	October 11, 2022
Yield's uncertainties for fitted pdf components in sub-ranges Roofit and RooStats roofit	5	785	September 26, 2022
How to move to the next root file in TChain? ROOT	2	307	October 10, 2022
Read a root file ROOT	3	438	October 10, 2022
ROOT::Math linking in PyROOT for vector operations ROOT python , math	3	582	October 10, 2022
How to tie a single fitting variable to multiple histograms? ROOT	3	259	October 10, 2022
THStack is graphing me as if I were NOSTACK and I don't want that ROOT root	2	204	October 10, 2022
The energy of photon Garfield++	3	353	October 9, 2022