TTree Draw() For a certain Range

ROOT
1

Hello,

Say I have a tree T with two branches b1 and b2:

How can I get

T->Draw("b1:b2")

to draw in a certain range. I’m creating lots of scatterplots and I would like their ranges to be the same for easy comparison.

Thanks,

Colorado

2

Did you try:T->Draw("b1:b2","b1<20 && b2<10");.

Cheers,
Philippe.

3

[quote=“pcanal”]Did you try:T->Draw("b1:b2","b1<20 && b2<10");.

Cheers,
Philippe.[/quote]

Yes, but if the range you want is say [0,100] and you have 3 points and 44,45,46, then it will draw the default range.

4

Try:T->Draw("b1:b2>>h2(100,0,100,100,0,100)","b1<20 && b2<10");where the semantics is (nbinsx,xlow,xhigh,nbinsy,ylow,yhigh).

Philippe.