Native way to get correlation matrix of branches of a tree

TMVA
1

Hello,
I was looking at some code for doing correlation matrices for different variables in a tree and i started wondering if there is a native way to do so. Something like
tree->getCorrMatrix(“branch1&&branch2&&…”,“weightBranch”);
and already draws it (maybe)
where branch1,2… are the branches with the variables i want to get the correlation matrix of, and weightBranch may be a branch containing the weight of each event. Would also be interesting to have formulas relating the different branches (“(branch1+branch2)&&branch3…”)

I’m sorry if it already exists, I was looking for it but i was not able to find it.
Thanks for your help.

2

Hi,

Not that I am aware of. Adding experts in the loop in case I am missing something (@moneta @pcanal ).

Cheers,
D

3

If it’s not there maybe it could be useful to implement in the future(?).
In any case thanks again for your response, cheers!

4

Hi,

Apologies for the delay. It could be useful but presently we do not have resources to put this on the program of work. Are you interested in giving it a try?

Best,
Danilo

5

Hello,
Sounds good, maybe we can discuss it at the end of next month? (If it’s not an issue)
MC

6

Sure! Talk to you at the end of July. The best way to proceed, I think, could be to submit a PR to GitHub - root-project/root: The official repository for ROOT: analyzing, storing and visualizing big data, scientifically and take it from there.

Thanks a lot!

Cheers,
Danilo