with TObjString it is possible to store strings in root trees. Is it also possible work with the string in TTree :: Draw commandos. I am trying something like this:
thanks for the hint. Backslashjing the quotes eliminates the error message. However I still did not find a way to make it work properly.
I found two valid expressions. The one you gave me always returns false (no entries are drawn). Anotherone
I had to exchange the space with an ‘_’ in the tree, because the interpreter deletes all whitespaces. Does anyone know how to protect whitespaces from the interpreter?