ProjectionX of different Y bin

[Munirat]

I have a TH2D, and I want to make X projections for the different Y bins. I have 9 Ybin and I want to save the individual X projection of Y as 1D when I do

TH1D* t3= time_L3->ProjectionY(“t3-t7”,4,5),
t3->Draw();

it give me the correct histo but when i do the second bin

TH1D* t4= time_L3->ProjectionY(“t3-t8”,7,8),
t4->Draw();
it add the second histo to the first and give me both the first and second bin histo
etc.
please I have no idea what to do.

[couet]

@Munirat

it add the second histo to the first and give me both the first and second bin histo

What you get is not very clear. According to what you describe you should get two independent histograms t3 and t4 . Can you clarify what you mean by "it add the second histo to the first ? " may be a small reproducer whole help to better understand.

[Munirat]

Thank for replying
My 2D plot is picture 2d and I want to get Xprojection of different Y . when I do

TH1D* t3= time_L3->ProjectionX(“t3-t7”,4,5),
t3->SetName(“t3_t7”);
t3->Draw();
I get picture t3.
but when I do
TH1D* t4= time_L3->ProjectionX(“t3-t8”,8,9),
t4->SetName(“t3_t8”);
t4->Draw();
I get picture t4

[Wile_E_Coyote]

Try:

TH1D *t5 = time_L3->ProjectionX("t5", 5, 5);
TH1D *t8 = time_L3->ProjectionX("t8", 8, 8);
TH1D *t9 = time_L3->ProjectionX("t9", 9, 9);

[Munirat]

Thanks so much. it works.
Really appreciate your help.