Superimpose 2 TH3 with different scale : Zaxis position

ROOT
1

Hello

I’ve been searching through documentation and I’ve haven’t found a clue for my peculiar problem : i’d like to superimpose two TH3 on the same plot with different scale. Using the transparent pad tip is working well but what I’d like to tune now is the position of the my Z axis (as they are different for both plot). Is this possible ?

I’m joining a mwe (a macro + input file) and the plot that I obtained so far (where both colored axis are superimposed).

test.png698×474 8.17 KB


I’d like to move the blue one on the top right corner if possible

ideas are more than welcome
thanks
jb
test.C (1.15 KB)
input.dat (15.6 KB)

2

hi again

I’ll give below the only solution i found (which is sufficient for what i do, but really looks dirty :stuck_out_tongue:), in case someone else is struggling with this.

Adding to my previous script those few lines

htemp->GetZaxis()->SetTickSize( -1*htemp->GetZaxis()->GetTickLength() );
htemp->GetZaxis()->SetLabelOffset( -10*htemp->GetZaxis()->GetLabelOffset() );
htemp->GetZaxis()->SetTitleOffset( -1*htemp->GetZaxis()->GetTitleOffset() );
htemp->GetZaxis()->RotateTitle( );

gives this results :

test.png698×474 9.21 KB

I’m still interested in another (more elegant) solution, if it exists.
thanks anyway
cheers
jb

3

Hi,
check $ROOTSYS/tutorials/hist/twoscales.C. I guess it works also for TH3

4

hi

thanks but nope: in the twoscale example, a TGaxis is created, once the x1, x2, y1 and y2 coordinates are provided. This does not take into account the angle from which we observe (Theta and Phi)

I’ve tried to adapt this computing these values using

and Theta and Phi, restraining their revolution range at [0,90], but this has never converged as I wanted (i can provided another macro).

5

The Z axis is always on the most left side of the box. It cannot be move on an other side. The solution you got is good. You could also shift the labels so they do not overlap.