Reading of ROOT vector branches - 1D array inside 1D array

[imoric]

Wondering if it is possible to read vector ROOT branches, 1D arrays of 1D arrays.
root_numpy seems to combine all the second degree 1D arrays inside the first degree 1D array, or am I missing something?

[ndawe]

Yes, vector<T> and vector<vector<T> > are supported where T is some primitive type.

[ndawe]

vector<T> gives you a column like [[a, b, c], [d, e]]
vector<vector<T> > gives you a column like [[[a, b], [c, d, e, f]], [[g]], [[h, i]]]

[ndawe]

Can you show a specific case where root_numpy is giving you something unexpected?

[imoric]

OK, just checked. Feel free to delete the thread.
The issue is with the ROOT file, all the vectors are bunched together.
Thank you!

[ndawe]

No problem!