added I3NTMuonLabelExtractor

[RasmusOrsoe]

I3NTMuonLabelExtractor extracts labels for muons exclusively on the northeren track dataset. These labels are needed to reconstruct energy and classify topology.

The labels are:

•         "classification" - topology type in int
  

•         "classification_emuon_deposited" - deposited muon energy
  

•         "classification_emuon_entry" - muon of energy on entry of the detector
  

•         "classification_emuon_cascade_energy" - cascade energy
  

•         "classification_emuon_track_energy" - track energy
  

•         "classification_emuon_track_length" - length of track
  

•         "classification_label" - topology type in string format
  

•         "coincident_muons" - :-)
  

[Aske-Rosted]

Seems good to me as long as the padding_value (-1) is not the same as any of the values in the extracted features.

[RasmusOrsoe]

@Aske-Rosted thanks! It's not the same. :-)