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From: Michael Murray (murray@CyclotronMail.tamu.edu)
Date: Mon Jan 29 2001 - 09:53:14 EST

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Dear ROOT experts,

Please help me with merging of *.root files.
In my ROOT script I do for example:

	TChain chain ("tree");
	chain.Add ("run001606seq000.root");
	chain.Add ("run001606seq001.root");
	chain.Merge ("run001606.root");

to merge two files into one. But this doesn't work
since ROOT gives an error-message:

	Error in <TChain::Add>: cannot find tree with name tree.

When I'm trying to see the name of the tree by:

	TFile f("run001606seq000.root");
	f.ls();

ROOT just ignores the last command. Could somebody, please,
help me with this? The ROOT version is 2.25/03.

Andrei Makeev.

Cyclotron TAMU, (979)845-1411

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