Add TRD tracklets slopes to unbinned residuals tree

[shahor02]

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[shahor02]

@miranov25 , the TRD tracklet slopes can be checked via

unbinnedRes->Draw("tracks.TRDTrkltSlope*5./0x7fff","tracks.TRDTrkltSlope!=0");

[miranov25]

Hello @shahor02,

Thanks for the update. I see we currently use short; we could switch to char (and similarly for other TrackData fields), but I’m unsure about backward/forward compatibility with existing data/readers. I’ve run into readback issues after similar changes before, so perhaps we should keep short for now.

Otherwise, the change is exactly what I had in mind. Have you produced a sample so I can verify the content?

Regards,
Marian

[shahor02]

@miranov25, here is pp data:

/alice/cern.ch/user/s/shahoian/toMI/o2tpc_residuals_1746914568173_1746915768168_421705_843409.root 

[miranov25]

Hello @shahor02,

I’m running into a forward-compatibility problem: my code can’t draw your new data even though the branch exists.

root [19] trackData->Draw("trk.TRDTrkltSlope","")
(long long) 0

TRDTrkltSlope is present in the tree, but Draw returns zero entries. I’ve seen similar behavior before when schema/layout changes break older readers. Interesting that in the past we did not have issue reading arbitrary branch of the tree

If it works on your side, please go ahead and merge. I’ll then test against master and verify the values.

In particular, I want to compare the angle to GetSnp at the reference radius, to test tracklet angle cut.

I assume cut will be :|
Ntracklet>Ntracklet findable -1

Best,
Marian

[shahor02]

Please try again, the class version was not incremented