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| root:root [2017/09/05 10:29] – iwn | root:root [2017/09/05 10:30] – iwn |
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| ''ROOT'' is a framework based on ''C++'' that is specialized in processing data in High Energy Physics. Some of its central classes are | ''ROOT'' is a framework based on ''C++'' that is specialized in processing data in High Energy Physics. Some of its central classes are |
| * ''TTree'' (''[[https://root.cern.ch/doc/master/classTH1.html|TTree]]'') to store data; typically variables are stored in branches for each entry/event (e.g. a proton-proton collision), | * ''[[https://root.cern.ch/doc/master/classTTree.html|TTree]]'' to store data; typically variables are stored in branches for each entry/event (e.g. a proton-proton collision), |
| * ''TH1F'', ''TH1D'', ... to make histograms, | * ''[[https://root.cern.ch/doc/master/classTH1.html|TH1]]'' to make histograms, |
| * ''TLorentzVector'' to make a four-vectors that you can boost, or add together with simply ''+'', | * ''[[https://root.cern.ch/doc/master/classTLorentzVector.html|TLorentzVector]]'' to make a four-vectors that you can boost, or add together with simply ''+'', |
| * ''TBrowser'' to browse ''ROOT'' files containing trees, histograms, ... | * ''[[https://root.cern.ch/doc/master/class TBrowser.html|TBrowser]]'' to browse ''ROOT'' files containing trees, histograms, ... |
| Once installed, you can use its extensive libraries in your ''C++'' code or in the ''ROOT'' command line. If you don't like ''C++'' or pointers, it is also possible to use ''ROOT'' in ''python'', a.k.a. ''pyROOT''. This is definitely a good choice for doing simple things, such as making plots. | Once installed, you can use its extensive libraries in your ''C++'' code or in the ''ROOT'' command line. If you don't like ''C++'' or pointers, it is also possible to use ''ROOT'' in ''python'', a.k.a. ''pyROOT''. This is definitely a good choice for doing simple things, such as making plots. |
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