I am trying to hadd multiple root files that all contain a structure of TFolders. Inside the TFolders (and subfolders) are histograms.
Each root file was generated by the same code, so all histogram names are identical.
Hadd does not seem to like TFolders I suppose? Is there a way these files can be merged?
I’m using a TFolder because its the only way to have any sort of structure on a js-root THttpServer. But sadly the output Sink file then contains a TFolder at the top level, even if everything underneath is TDirectory, so I still can’t hadd this so easily (if desired).
This kind of folder structure is “internal” data management of THttpServer.
As I understand, question was using of files with sub-directories - which can be produced by hadd.
I see no problem here.