bipolar

Bipolar coordinates: the plane described by two foci rather than one center. Positions bend around both poles, which suits paired or two-source geometry.

gf.chart(seafood, { coord: gf.bipolar(120) })
  .flow(gf.stack({ by: "species", dir: "x" }))
  .mark(gf.rect({ w: "count", fill: "species" }))
  .render(root, {
    w: 400,
    h: 300,
    transform: { x: 200, y: 150 },
  });

Signature

bipolar(fociDistance?: number);

fociDistance is positional, not an options object — unlike polar(), which takes an options bag.

Parameters

Bipolar coordinates from two foci. JS takes fociDistance positionally, not as an options object.

Option	Type	Default	Description
fociDistance	number	100	Distance in pixels between the two foci.