Empty note array to piano roll leads to ValueError on empty sequence. #356
Description
For an empty MIDI file pred_MIDI (e.g. transcription gone real bad):
import partitura as pt
PERF_PIANO_ROLL_PARAMS = {"time_unit": "sec", "time_div": 100, "onset_only": False, "piano_range": True, "time_margin": 0, "return_idxs": False}
pred_perf = pt.load_performance_midi(pred_MIDI)
pred_na = pred_perf.note_array()
pred_pr = pt.utils.compute_pianoroll(pred_na, **PERF_PIANO_ROLL_PARAMS)fails on the following line:
partitura/partitura/utils/music.py
Line 1379 in 8812ca6
with
ValueError: min() arg is an empty sequence.
Probably just cosmetics of exception handling, just thought I'd report (close if irrelevant).