Hello, is there a way to merge 3 TH2F plots in a single one like this ? [c562a8cf74a60ff3630f7ec28fa481af099c16ae] Thank you Please read tips for efficient and successful posting and posting code ROOT Version: 6.20/24 Platform: Windows 10 Compiler: VS2019

thank you @couet but in the TH3F I can use just 3 variables…I’ve 4 variables (x-y-z coordinates and the released energy).

I guess the question is how to draw three 2D projections (of something) on three “faces” / “sides” of a cube.

[image] faca87: thank you @couet but in the TH3F I can use just 3 variables…I’ve 4 variables (x-y-z coordinates and the released energy). Well a TH3 has x y z and bin content …

Thank you the both @couet and @Wile_E_Coyote . @couet yes, the TH3F has 3 bin contents…but I need to release each coordinates to the released energy. For exaxmple, now I have the three graph (just few events, because I’m just testing the Geant4 code working) the x hit point vs the released energy …

[image] faca87: I would like to know if ROOT allows to merge the three canvas in a single one like this one No … there is no direct way to do that from 3 canvases.

Thank you @OSchaile , I think that by this macro just reletes th x-y-z coordinates (i.e. 3 variables) and not 4… anyway, I looked it and it’s a nice way to show results about the hits point…Unfortunately I tried to modify the macro to get data from my root file…but it doesn’t work fine… [image] He…

Hi, A TH3 is in fact a 4-tuple: x, y, z, c (bin content) Dont you want to weight your entries with the “ReleasedEnergy”? Are you sure about this line (y appears twice): ("EndStepPos.z : EndStepPos.y : EndStepPos.y >> h3DHit") Otto

Thank you @OSchaile [image] OSchaile: Dont you want to weight your entries with the “ReleasedEnergy”? Yes! Obviously! If it’s possible to weight the entries according to the Released Energy, I want to do it, because I need to study the released energy. How can I do it? [image] OSchaile: …

Hi, my original example had equal x,y,z ranges, therefore a bug in the code was hidden. (May be you find it) Until this is fixed you might try with forced equal ranges: TH3F *h3 = new TH3F("h3DHit", "", 40, -5., 5.,40, -5.,5.,40,-5.,5.); Btw the macro you att has still y twice Otto

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3TH2F in a 3D graph

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OSchaile June 22, 2020, 4:05pm 9

may something like this?

Project TH3 on walls as TH2 ROOT

Hello, triggered by the last contribution in this thread: I made a little exercise to look if this could be useful proj3d.C (6.9 KB) Note: This is meant as an exercise or starting point not a proposal. If you try it dont use too many bins (Its TH3!) the example is with 40x40x40. Stay healthy Otto

Otto

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