Hi rooters,
for the first time I am facing this kind of problem and I find it very hard to resolve!
I read many files using TChain and MakeClass, each file contains different number of entries (0,1000000).
Every time a new file is opened, the Notify function is called, and there I get the current file read a directory and then retrieve one histogram. The code was okay for a long time but then started to crash because some trees do not have entries and thus Notify function is not called.
I need to call the function even if there are no entires in the tree, since I need the histogram which records the total number of events.
Is there a solution?
Cheers