In the plot I would like to plot the projection of the TKE axis as well as the mass axis to show the 1D spectrum (in the white space opposite to the corresponding axis ). How to plot the x (Mass) and y (TKE) projections on the 3D plot.

@gini See your previous post again.
The 3-D plot has a vertical axis maximum of about 180.
The “Mass (ie x axis)” and “Energy (ie y axis)” plots need vertical axis maximums of, respectively, 4000 and 4500 (i.e., they will not fit on the 3-D back-boxes).

Yeah thats also a concern, so what I do is I plot my 2D histogram from my mass and tke branch (see plot1) and using TBrowser I plot my lego my 3D histogram (see plot 2) :