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import {bin as binner, cross, group, sum} from "d3";
import {firstof} from "../defined.js";
import {valueof, first, second, range, identity, lazyChannel, maybeLazyChannel, maybeTransform, maybeColor, maybeValue, mid, take, labelof} from "../mark.js";
import {offset} from "../style.js";
// Group on y, z, fill, or stroke, if any, then bin on x.
export function binX({x, y, out = y == null ? "y" : "fill", inset, insetLeft, insetRight, ...options} = {}) {
([insetLeft, insetRight] = maybeInset(inset, insetLeft, insetRight));
const [transform, x1, x2, l, picker] = bin1(x, "y", {y, ...options});
return {x1, x2, ...transform, picker, inset, insetLeft, insetRight, [out]: l};
}
// Group on y, z, fill, or stroke, if any, then bin on x.
export function binXMid({x, out = "r", ...options} = {}) {
const [transform, x1, x2, l, picker] = bin1(x, "y", options);
return {x: mid(x1, x2), ...transform, picker, [out]: l};
}
// Group on x, z, fill, or stroke, if any, then bin on y.
export function binY({y, x, out = x == null ? "x" : "fill", inset, insetTop, insetBottom, ...options} = {}) {
([insetTop, insetBottom] = maybeInset(inset, insetTop, insetBottom));
const [transform, y1, y2, l, picker] = bin1(y, "x", {x, ...options});
return {y1, y2, ...transform, picker, inset, insetTop, insetBottom, [out]: l};
}
// Group on y, z, fill, or stroke, if any, then bin on x.
export function binYMid({y, out = "r", ...options} = {}) {
const [transform, y1, y2, l, picker] = bin1(y, "x", options);
return {y: mid(y1, y2), ...transform, picker, [out]: l};
}
// Group on z, fill, or stroke, if any, then bin on x and y.
export function binR({x, y, ...options} = {}) {
const [transform, x1, x2, y1, y2, r] = bin2(x, y, options);
return {x: mid(x1, x2), y: mid(y1, y2), r, ...transform};
}
// Group on z, fill, or stroke, if any, then bin on x and y.
export function bin({x, y, out = "fill", inset, insetTop, insetRight, insetBottom, insetLeft, ...options} = {}) {
([insetTop, insetBottom] = maybeInset(inset, insetTop, insetBottom));
([insetLeft, insetRight] = maybeInset(inset, insetLeft, insetRight));
const [transform, x1, x2, y1, y2, l, picker] = bin2(x, y, options);
return {x1, x2, y1, y2, ...transform, picker, inset, insetTop, insetRight, insetBottom, insetLeft, [out]: l};
}
function bin1(x, key, {[key]: k, z, fill, stroke, weight, domain, thresholds, normalize, cumulative, ...options} = {}) {
const m = normalize === true || normalize === "z" ? 100 : +normalize;
const bin = binof(identity, {value: x, domain, thresholds});
const [X1, setX1] = lazyChannel(x);
const [X2, setX2] = lazyChannel(x);
const [L, setL] = lazyChannel(`${labelof(weight, "Frequency")}${m === 100 ? " (%)" : ""}`);
const [vfill] = maybeColor(fill);
const [vstroke] = maybeColor(stroke);
const [BK, setBK] = maybeLazyChannel(k);
const [BZ, setBZ] = maybeLazyChannel(z);
const [BF = fill, setBF] = maybeLazyChannel(vfill);
const [BS = stroke, setBS] = maybeLazyChannel(vstroke);
const [J, setJ] = lazyChannel();
return [
{
...key && {[key]: BK},
z: BZ,
fill: BF,
stroke: BS,
...options,
transform: maybeTransform(options, (data, facets) => {
const B = bin(data);
const K = valueof(data, k);
const Z = valueof(data, z);
const F = valueof(data, vfill);
const S = valueof(data, vstroke);
const W = valueof(data, weight);
const binFacets = [];
const binData = [];
const X1 = setX1([]);
const X2 = setX2([]);
const L = setL([]);
const G = firstof(K, Z, F, S);
const BK = K && setBK([]);
const BZ = Z && setBZ([]);
const BF = F && setBF([]);
const BS = S && setBS([]);
let n = W ? sum(W) : data.length;
let i = 0;
if (cumulative < 0) B.reverse();
for (const facet of facets) {
const binFacet = [];
for (const I of G ? group(facet, i => G[i]).values() : [facet]) {
if (normalize === "z") n = W ? sum(I, i => W[i]) : I.length;
const set = new Set(I);
let f;
for (const b of B) {
const s = b.filter(i => set.has(i));
f = cumulative && f !== undefined ? f.concat(s) : s;
const l = W ? sum(f, i => W[i]) : f.length;
if (l > 0) {
binFacet.push(i++);
binData.push(take(data, f));
X1.push(b.x0);
X2.push(b.x1);
L.push(m ? l * m / n : l);
if (K) BK.push(K[f[0]]);
if (Z) BZ.push(Z[f[0]]);
if (F) BF.push(F[f[0]]);
if (S) BS.push(S[f[0]]);
}
}
}
binFacets.push(binFacet);
}
setJ(binData);
return {data: binData, facets: binFacets};
})
},
X1,
X2,
L,
J
];
}
// Here x and y may each either be a standalone value (e.g., a string
// representing a field name, a function, an array), or the value and some
// additional per-dimension binning options as an objects of the form {value,
// domain?, thresholds?}.
function bin2(x, y, {weight, domain, thresholds, normalize, z, fill, stroke, ...options} = {}) {
const m = normalize === true || normalize === "z" ? 100 : +normalize;
const binX = binof(first, {domain, thresholds, ...maybeValue(x)});
const binY = binof(second, {domain, thresholds, ...maybeValue(y)});
const bin = data => cross(binX(data).filter(nonempty), binY(data).filter(nonempty).map(binset2), (x, y) => y(x));
const [X1, setX1] = lazyChannel(x);
const [X2, setX2] = lazyChannel(x);
const [Y1, setY1] = lazyChannel(y);
const [Y2, setY2] = lazyChannel(y);
const [L, setL] = lazyChannel(`${labelof(weight, "Frequency")}${m === 100 ? " (%)" : ""}`);
const [vfill] = maybeColor(fill);
const [vstroke] = maybeColor(stroke);
const [BZ, setBZ] = maybeLazyChannel(z);
const [BF = fill, setBF] = maybeLazyChannel(vfill);
const [BS = stroke, setBS] = maybeLazyChannel(vstroke);
const [J, setJ] = lazyChannel();
return [
{
z: BZ,
fill: BF,
stroke: BS,
...options,
transform: maybeTransform(options, (data, facets) => {
const B = bin(data);
const Z = valueof(data, z);
const F = valueof(data, vfill);
const S = valueof(data, vstroke);
const W = valueof(data, weight);
const binFacets = [];
const binData = [];
const X1 = setX1([]);
const X2 = setX2([]);
const Y1 = setY1([]);
const Y2 = setY2([]);
const L = setL([]);
const G = firstof(Z, F, S);
const BZ = Z && setBZ([]);
const BF = F && setBF([]);
const BS = S && setBS([]);
let n = W ? sum(W) : data.length;
let i = 0;
for (const facet of facets) {
const binFacet = [];
for (const I of G ? group(facet, i => G[i]).values() : [facet]) {
if (normalize === "z") n = W ? sum(I, i => W[i]) : I.length;
const set = new Set(I);
for (const b of B) {
const f = b.filter(i => set.has(i));
const l = W ? sum(f, i => W[i]) : f.length;
if (l > 0) {
binFacet.push(i++);
binData.push(take(data, f));
X1.push(b.x0);
X2.push(b.x1);
Y1.push(b.y0);
Y2.push(b.y1);
L.push(m ? l * m / n : l);
if (Z) BZ.push(Z[f[0]]);
if (F) BF.push(F[f[0]]);
if (S) BS.push(S[f[0]]);
}
}
}
binFacets.push(binFacet);
}
setJ(binData);
return {data: binData, facets: binFacets};
})
},
X1,
X2,
Y1,
Y2,
L,
J
];
}
function binof(defaultValue, {value = defaultValue, domain, thresholds}) {
return data => {
const values = valueof(data, value);
const bin = binner().value(i => values[i]);
if (domain !== undefined) bin.domain(domain);
if (thresholds !== undefined) bin.thresholds(thresholds);
return bin(range(data));
};
}
function binset2(biny) {
const y = new Set(biny);
const {x0: y0, x1: y1} = biny;
return binx => {
const subbin = binx.filter(i => y.has(i));
subbin.x0 = binx.x0;
subbin.x1 = binx.x1;
subbin.y0 = y0;
subbin.y1 = y1;
return subbin;
};
}
function nonempty({length}) {
return length > 0;
}
function length1({length}) {
return length;
}
length1.label = "Frequency";
function maybeInset(inset, inset1, inset2) {
return inset === undefined && inset1 === undefined && inset2 === undefined
? (offset ? [1, 0] : [0.5, 0.5])
: [inset1, inset2];
}
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