Define two dimensional TClonesArray

ROOT
1

Hello,

I am trying two write two dimensional array of TLorentzVector in to a Tree via TClonesArray. The usual 1D is working fine but I don’t know how to expand it to the 2D.

Thanks
Mohsen

2

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3

May be you can post what you already did for 1D ?
Our experts in that area will then understand better what you are trying to do in 2D.