I’m trying to add a branch to a tree that has several dynamically allocated arrays on a single branch. One array per branch works, but adding another returns the error: “ERROR leaf:var.up, len=20 and max=0”. These two arrays are stored in a single struct. I’ve attached a simple program that illustrates the problem.
example.cpp (992 Bytes)
Make 2 branches instead of 1 (or set the indiviidual leaf addresses)
TFile outfile("out.root","RECREATE");
TTree *tree = new TTree("tree","Tree");
tree->Branch("b0",&num,"num/I");
tree->Branch("ip",var.ip,"var.ip[num]/I");
tree->Branch("op",var.op,"var.op[num]/I");
tree->Fill();
It is not recommended (performance and space wise) to store several dynamic arrays in the same branch
Rene