Todo: d3 ECG

Another one for the todo list.

Fancy plotting leads I/II/III out and making and interactive scroller for time vs vector / direction.

Input data might be from here or here. Unfortunately both of these are for synthesising a single lead.

An algorithm was described in 2018 for synthesising a set of 12-lead data.

Real data?

T-Wave Alternans Challenge Database and PTB Diagnostic ECG Database both contain 12-lead examples from healthy subjects.