FEDRA How To: Difference between revisions
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Latest revision as of 09:49, 18 March 2015
- Some tips making Plots with ROOT.
- How to invert an affine transformation:
- EdbAffine2D myaff - myaff.Set(float a11, float a12, float a21, float a22, float b1, float b2) - myaff.Invert() - myaff.Print()
- How to merge root files
- TChain *chain=new TChain("couples");
- chain->AddFile("myfile_1");
- chain->AddFile("myfile_2");
- chain->AddFile("...");
- chain->Merge("my_output_file");
- chain->~TChain();