Streamgraph

from dataviz import streamgraph
from dataviz import save

def main() raises:
    var years: List[String] = [
        "2016", "2017", "2018", "2019", "2020", "2021", "2022", "2023", "2024",
    ]
    var genres: List[String] = [
        "Pop", "Hip-hop", "Rock", "Electronic", "Country",
    ]
    var listens: List[List[Int]] = [
        [42, 45, 48, 52, 57, 63, 67, 71, 74],
        [24, 29, 36, 44, 53, 64, 72, 80, 87],
        [55, 53, 50, 48, 46, 45, 44, 43, 42],
        [16, 20, 25, 31, 38, 46, 55, 63, 70],
        [27, 28, 30, 31, 34, 38, 42, 47, 52],
    ]

    var c = streamgraph(
        years,
        genres,
        listens,
        title="Illustrative Listening Hours by Genre (millions)",
        x_title="Year",
    )
    save(c, "docs/src/examples/out_streamgraph.svg")