Special variables in TTree::Draw

[canigia]

Hi,

could somebody point me to the/a documentation about the special variables of TTree::Draw (like Entry$, Entries$ etc)?

I was wondering whether there is one corresponding to the index of array branches. So e.g. if I have signal amplitudes of strips of a detector stored as amp[#strip], that I could draw the line shape with

tree->Draw(“amp:ArrayIdx$”)

if ArrayIdx$ would be the running index of the array entries.

Best regards and thanks,
Klaus

[Wile_E_Coyote]

TTree::Draw

[canigia]

Hi, thanks!

I already found that but had the hope it could be incomplete. But it looks like there is no variable for the current array index of an array branch…

[Wile_E_Coyote]

How about “Iteration$”?

[canigia]

Oops, you are right! I misunderstood the meaning of Iteration$ in the description…
Thanks again!