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fix area identity defaults #2411

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Merged
mbostock merged 1 commit into from
Apr 6, 2026
Merged

fix area identity defaults #2411

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9 changes: 5 additions & 4 deletions src/transforms/bin.js
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,7 @@ import {
reduceIdentity,
reduceZ
} from "./group.js";
import {maybeIdentityX, maybeIdentityY} from "./identity.js";
import {maybeInsetX, maybeInsetY} from "./inset.js";

// Group on {z, fill, stroke}, then optionally on y, then bin x.
Expand Down Expand Up @@ -78,12 +79,12 @@ function maybeDenseInterval(bin, k, options = {}) {
return bin(outputs, options);
}

export function maybeDenseIntervalX({y = identity, x = indexOf, ...options} = {}) {
return maybeDenseInterval(binX, "y", withTip({x, y, ...options}, "x"));
export function maybeDenseIntervalX({x = indexOf, ...options} = {}) {
return maybeDenseInterval(binX, "y", withTip({x, ...maybeIdentityY(options)}, "x"));
}

export function maybeDenseIntervalY({x = identity, y = indexOf, ...options} = {}) {
return maybeDenseInterval(binY, "x", withTip({x, y, ...options}, "y"));
export function maybeDenseIntervalY({y = indexOf, ...options} = {}) {
return maybeDenseInterval(binY, "x", withTip({y, ...maybeIdentityX(options)}, "y"));
}

function binn(
Expand Down
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