I am curious that when viewing the histogram of a single branch in a TTree (I opened up a root file and clicked on the branch to view the histogram), why does in some of the case, the rebin option is less flexible than the other (as in figure b). I dont think that this is limited by entries number, because the root file in figures (a) and (b) have 1M and 5M entries respectively.
Is is something to do with the saving process? If so, how do I take care of this when saving root files ?
Thanks in advance.
_ROOT Version: 6.24 (via cvmfs)
Platform: Ubuntu20.0LTS on WSL 2