Combining different TTree entries with dataframes (repost)

[dudouet]

Hello,

Some months ago, I posted this question on the forum related to difficulties I am facing with the dataframes environment.

Combining different TTree entries with dataframes

Hello, I am continuing my fight to switch my analysis codes to dataframes… I have to generate “uncorrelated data”, by plotting values of a column from a TTree entry versus the same column but from another TTree entry. Let’s say I have an array of double corresponding to energies. I need to plot a TH2 histogram with the energies of entry i on x versus the energies of entry i+1, i+2,… i+N. This is what we called event mixing normalization. With “classical” selector, this is really easy to do, b…

I decided to ignore it in the end and to continue working with my standard Selector+Proof configuration, but I see now that proof will no more be maintained. So I am not sure how to proceed to maintain the analysis codes of our collaboration for the future ROOT versions.

Did you had time to look at it, and to examine the example I provided ?

Thanks in advance

Jérémie

[bellenot]

Maybe @vpadulan can take a look