Sadiq ROOTSYS Data Analysis Memo

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Revision as of 01:01, 10 December 2011 by Setisadi (talk | contribs) (→‎Creating Class and Using it)
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We want to multiply Aug spectrum to calibration constant, and then overlay Na22 spectrum with Co60 spectrum.

Creating Class and Using it

We created program called T.C by:

root [1] T->MakeClass();

We edited T.C to add the calibration and calculation we want. Then Load T.C:

root [2] .L T.C

root [3] T t;

root [4] t.Loop();

In T.h, we can edit which root file we want to work on.

For example, in T.h, we can work on test1052.root file if we put

// if parameter tree is not specified (or zero), connect the file
// used to generate this class and read the Tree.
  if (tree == 0) {
     TFile *f = (TFile*)gROOT->GetListOfFiles()->FindObject("test1052.root");
     if (!f) {
        f = new TFile("test1052.root");
     tree = (TTree*)gDirectory->Get("T");