import leather

data = [
    { 'x': 0, 'q': { 'y': [3] } },
    { 'x': 4, 'q': { 'y': [5] } },
    { 'x': 7, 'q': { 'y': [9] } },
    { 'x': 8, 'q': { 'y': [4] } }
]

def x(row, index):
    return row['x']

def y(row, index):
    return row['q']['y'][0]

chart = leather.Chart('Line')
chart.add_line(data, x=x, y=y)
chart.to_svg('examples/charts/custom_data.svg')