How to add a title to color bar?

ROOT
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1692752847995
16927528479951118×708 43.5 KB

TH2D class object was plotted with “option=contz”, but How to add a title to color bar?

ROOT Version: 6.28/04
Platform: Ubuntu 20.04
Compiler: GCC 9.4.0

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h->GetZaxis()->SetTitle("Z title");
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@couet , thanks, it works well!