500 trading days (weekdays, 2024-01-02 through 2025-12-01), a candlestick plugin and a
volume pane sharing the same category axis, and a 20-period SMA overlay — all drawn by
@dojo-ng/chart-financial plugins on a chart with series: [] of
its own. The x axis stays ordinal (decision 16: a real trading calendar skips weekends,
so a continuous time scale would reserve dead space for them); tradingDayTicks
thins the 500 daily labels to month starts through the chart's own formatX.
The brush below narrows what the plugins actually draw — drag it and watch the
candlesticks, volume bars, and SMA line all narrow to the same window, since they all
read ctx.data, the same brush-narrowed slice the core series would.