Nested band scales follow d3-main/d3-scale/src/band.js.
Stacking uses d3-shape's zero-baseline accumulation, separated by sign
(d3-main/d3-shape/src/offset/diverging.js). No rendering or colour policy.
Duplicate category/series pairs are rejected: aggregate your rows explicitly.
Nested band scales follow d3-main/d3-scale/src/band.js. Stacking uses d3-shape's zero-baseline accumulation, separated by sign (d3-main/d3-shape/src/offset/diverging.js). No rendering or colour policy. Duplicate category/series pairs are rejected: aggregate your rows explicitly.