I was running ROOT 5.18 on my laptop and it has the interesting issue of saving the plots 90 degrees rotated. I never bothered myself with this until someone brought the issue on CMS's hypernews. The solutions she got were:
1- You can change the size of the canvas to be rectangle
TCanvas *c = new TCanvas("c","",800,850); Quite easy but we need to remember that the TDR style for CMS papers is 600 by 600.
2- It turned out that this issue is solved in the new releases (after 5.22).
So the challenge was to try to update my old ROOT release. These days they have clear instructions about installing ROOT. The problem is that this is not a full package and installing without care will create a mess! so doing the instructions you can use that release in the current shell. but not if you opened a new one.
I wanted something more "default". So here is the trick:
in 'root' edit file names: .bashrc
and at the bottom i added:
. $HOME/Desktop/Research/ROOT522/root/bin/thisroot.sh
which is the place where the new installation is.
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