root-project
[ROOT-5105] More / alternative cut expressions in TTreeViewer
Feature description
From https://its.cern.ch/jira/browse/ROOT-5105
Hi,
TTreeViewer has one cut variable (the pair of scissors). I have received a users request by [email protected] about being able to define more cuts, such that they can be compared more easily.
Could this be implemented?
Cheers, Axel.
Alternatives considered
No response
Additional context
No response
I don't understand this issue. One can define several cutting expressions "E" and drag them alternatively to the "Scissors" variable to compare them consecutively. If needed, using the "SAME" option for overlaying.
@bellenot : if @ferdymercury is right, I would be inclined to close this issue as this is an interesting one, but "clarified" (in the JIRA sense). What do you think?
I think he's right, but let's ask @agheata, the original author of TTreeViewer
I checked again.
So you can seamlessly define several "cut expressions". When doing that, it automatically changes the icon from "E" to a yello-green condition icon.
Then, you can either drag-drop cond1 or cond2 to the scissors. Or you can double click on the scissors, and write more complex operations such as: (~cond1) && (~cond2), or (~cond1) || !(~cond2).
Parenthesis are important!!
If you draw one after the other, or call new TCanvas, you can easily compare them.
The only thing that really does not work is the option "same". So you cannot compare them on the same canvas.
So, I believe that two tasks are required here:
- [ ] Improve the doxygen documentation of TTreeViewer to explain this capability
- [ ] Fix the issue that "same" option does not work