[ROOT] Branch of TMatrixD

From: Dan Krop (dkrop@indiana.edu)
Date: Tue Jan 21 2003 - 16:12:07 MET 

Hi,
	I am having a problem creating a tree with a branch of TMatrixD.  Below is a 
short test program showing the problem I have.  It runs fine, but when I tree 
to MakeClass() out of the tree and loop over it, I get a seg fault.  I 
apologize if this is some trivial mistake that I am overlooking.  I am using 
version 3.03/05 on RH 7.3.

					Thanks in advance,
								Dan

//----------------------------------------------------------------------------------
void TreeMat(){

  TFile *fout=new TFile("TreeMat.root","RECREATE");
  TTree *tree=new TTree("test_tree","test_tree");
  TMatrixD matrix(2,2);
  tree->Branch("matrix","TMatrixD",&matrix,64000,0);

  matrix(0,0)=1.;
  matrix(0,1)=2.;
  matrix(1,0)=3.;
  matrix(1,1)=4.;

  tree->Fill();
  
  fout->Write();
  fout->Close();
}
//--------------------------------------------------------------------------------------

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