Get summary stats on durations

[blueCat11]

Get and display summary stats on durations for distant analysis.

[blueCat11]

There are now summary stats passed to the front-end. keys are:

• "duration_length_in_quarters_notes_count": How often does a note of a certain length occur. The length is in quarters, so that 1.0 is a quarter note, 4.0 is a whole note, 0.5 is a 16th note and 1.5 is a dotted quarter note
• "duration_length_in_quarters_rests_count": Same for rests
• "duration_type_notes_count": type doesn't take into account the dots. So a note of length 1.5 and 1.0 would both resolve to type "quarter"
• "duration_type_rests_count": same for rests
• "duration_fullname_notes_count": The first part of the fullname is the type, and then possible additional information is added like dots or tuplets (example: 'Eighth Triplet (1/3 QL)')
• "duration_fullname_rests_count": same for rests
• "duration_length_in_quarters_notes_rests_count": no distinguishing between notes and rests

Each of these has a dict with count values. They are in per-piece, per-group, and total.

[blueCat11]

As for visualization ideas: Probably the type doesn't have to be visualized, as its information is already present the other two stats. Bar charts would probably be sufficient for the counts.

I am thinking of calculating other summary stats in addition, like the ratio between rests and notes (silence and sound). I'd like to do this in the backend, so the calculation time happens asynchronously... Do you think this could be interesting @Maxikilliane,, @RiaRentnueg ?

[Maxikilliane]

@blueCat11 I think it COULD be interesting, but we don't know that yet. I think we have enough visualisations for now (also because we are kind of guessing what's interesting for musicologists). I think we have demonstrated that it works and that we can do a lot of cool stuff with music data and I also think that the currently available visualizations should be enough for the scope of this class. We should rather focus on the other open issues instead of doing more visualisations.

[RiaRentnueg]

@blueCat11 I agree with Maxi. If we should have time at the end we could try to implement that also.