scatter

Spread overlapping points apart so dense clusters and stacked observations stay readable. One engine covers two cases:

• Overplotting: ordinary { x, y } points receive a small offset so points that land on nearly the same coordinate fan out.
• Strip plot: supply each band as { x: 'Category', y: [v1, v2, ...] } and the values scatter horizontally within that category.

Offsets are measured in axis units and are deterministic, so the layout is stable across re-renders and safe for server-side rendering. The offset only moves the drawn marker: the tooltip and the underlying data keep their exact values.

plotOptions: {
  scatter: {
    jitter: {
      enabled: true,
      x: 0.3,
      y: 0.5
    }
  }
}

Turn jitter on. Off by default, so existing scatter charts are unchanged.

Maximum horizontal offset, in x-axis units. On a category axis, 1 equals one full category step. Keep it small relative to the axis range so the spread does not misrepresent where the points actually sit.

Maximum vertical offset, in y-axis units. Leave at 0 for strip plots, where the spread should stay horizontal.

Colour each band separately by its position, so a single-series strip plot shows a distinct colour per category.

Cap on the number of points drawn per band. Bands with more observations are stride-thinned down to this count to keep rendering fast.