Area

from dataviz import area
from dataviz import save
from dataviz.core.colors import STEELBLUE
from dataviz import Theme

def main() raises:
    # Illustrative hourly solar output: zero overnight, a small
    # morning cloud dip, and a broad midday production peak.
    var hour: List[Float64] = [
        0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
        12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
    ]
    var output_mw: List[Float64] = [
        0, 0, 0, 0, 0, 0, 2, 9, 21, 34, 31, 52,
        63, 68, 66, 59, 48, 35, 20, 8, 1, 0, 0, 0,
    ]

    var c = area(
        hour,
        output_mw,
        title="Illustrative Solar Generation on a Clear Day",
        x_title="Hour of day",
        y_title="Output (MW)",
        theme=Theme(mark_color=STEELBLUE),
    )
    save(c, "docs/src/examples/out_area.svg")

from dataviz import StepStyle, area
from dataviz import save
from dataviz.core.colors import SEAGREEN
from dataviz import Theme

def main() raises:
    # Units in the warehouse change only when a delivery arrives
    # or a shipment leaves, and hold flat in between. A straight
    # top edge would fill in a slow drift between counts that
    # never happened, and the fill would assign area to those
    # invented values; StepStyle.POST holds each count until the
    # day the next one was taken.
    var day: List[Float64] = [
        0.0, 4.0, 7.0, 11.0, 16.0, 20.0, 25.0, 28.0
    ]
    var units: List[Float64] = [
        120.0, 340.0, 300.0, 260.0, 480.0, 430.0, 390.0, 350.0
    ]

    var c = area(
        day,
        units,
        step=StepStyle.POST,
        title="Warehouse Inventory",
        theme=Theme(mark_color=SEAGREEN),
        x_title="Day of month",
        y_title="Units on hand",
    )
    save(c, "docs/src/examples/out_step_area.svg")