Render waveform as ascii text

README.md

ascii_waveform.py

# coding=utf-8

def render(data, label=''):
    line1 = []
    line2 = []
    for i, pt in enumerate(data):
        if i<len(data)-1:
            if pt == data[i+1]:
                line1.append((" ", "─")[pt])
                line2.append(("─", " ")[pt])
            else:
                line1.append(("┌", "┐")[pt])
                line2.append(("┘", "└")[pt])
        else:
            line1.append((" ", "─")[pt])
            line2.append(("─", " ")[pt])


    print label, ''.join(line1)
    print ' '*len(label),''.join(line2)

render([1,1,1,0,0,0,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0], 'sda')
render([1,1,1,1,0,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1], 'scl')

output.txt

python ascii_waveform.py
sda ──┐  ┌───────┐
      └──┘       └───────────
scl ───┐  ┌─┐ ┌─┐ ┌─┐ ┌─┐ ┌──
       └──┘ └─┘ └─┘ └─┘ └─┘