Hi!
Root gives me the *ERROR 30 : Bad numerical expression: "031251_"
and the corresponding line in the code is: myTree.Draw("pullforce>>h_type031251_fm7(30,0,0)", "type==031251_ && fm==7")
type is a Branch of type char*. The second error-message is:
Error in <TTreeFormula::Compile>: Both operands of the operator == have to be either numbers or strings
I tried to put the string in tickmarks, but received a similar error-message: "type=='0210708' && fm==7" but then it complained:
ERROR 30 : Bad numerical expression: "'0210708'"
Error in <TTreeFormula::Compile>: Both operands of the operator == have to be either numbers or strings
Is there a way to enclose the c-string (with something else than tickmarks), such that '_' is recognized as part of the string?
(I'm using 3.10/02 of 1 april 2004 on a CERN-RedHat)
Thank you,
Bernd.
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