muspy.show_pianoroll bug when the music tracks are altered.

[Juno-T]

To reproduce:

dataset = muspy.LakhMIDIAlignedDataset("path/to/dataset")
music = dataset[1].copy()
music.tracks = music.tracks[:1]
muspy.show_pianoroll(music, mode="hybrid", preset="frame")

The error:

File venv/lib/python3.10/site-packages/muspy/outputs/pianoroll.py:57, in to_pypianoroll(music)
     55 for tempo in music.tempos:
     56     tempo_arr[position : tempo.time] = qpm
---> 57     tempo_arr[tempo.time] = tempo.qpm
     58     position = tempo.time + 1
     59     qpm = tempo.qpm

IndexError: index 29085 is out of bounds for axis 0 with size 29085

The bug is probably how the music length is calculated.
i.e.
music.get_end_time() return the same number as music.tempos[-1].time if the tracks are altered.
I'm not sure if get_end_time() function or the piano roll function should be fixed.

[egndz]

I cannot reproduce the error, instead I get:

File "/Users/egehangunduz/Desktop/github/muspy/test.py", line 10, in <module> muspy.show_pianoroll(music, mode="hybrid", preset="frame") File "/Users/egehangunduz/Desktop/github/muspy/muspy/visualization/pianoroll.py", line 12, in show_pianoroll return multitrack.plot(**kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^ File "/Users/egehangunduz/Desktop/github/muspy/env/lib/python3.11/site-packages/pypianoroll/multitrack.py", line 697, in plot return plot_multitrack(self, axs, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/Users/egehangunduz/Desktop/github/muspy/env/lib/python3.11/site-packages/pypianoroll/visualization.py", line 465, in plot_multitrack merged_drums = drums.blend() ^^^^^^^^^^^^^ File "/Users/egehangunduz/Desktop/github/muspy/env/lib/python3.11/site-packages/pypianoroll/multitrack.py", line 431, in blend stacked = self.stack() ^^^^^^^^^^^^ File "/Users/egehangunduz/Desktop/github/muspy/env/lib/python3.11/site-packages/pypianoroll/multitrack.py", line 413, in stack return np.stack(pianorolls) ^^^^^^^^^^^^^^^^^^^^ File "/Users/egehangunduz/Desktop/github/muspy/env/lib/python3.11/site-packages/numpy/core/shape_base.py", line 445, in stack raise ValueError('need at least one array to stack') ValueError: need at least one array to stack

can you please try to reproduce it and let me know so I can assign myself