Published
Edited
Jun 18, 2021
Importers
9 stars
d3[variant]([["🍑", 1], ["🍑", 4], ["🍐", 2]], v => d3.sum(v, d => d[1]), d => d[0])
athletes = [
{name: "Floyd Mayweather", sport: "Boxing", nation: "United States", earnings: 285},
{name: "Lionel Messi", sport: "Soccer", nation: "Argentina", earnings: 111},
{name: "Cristiano Ronaldo", sport: "Soccer", nation: "Portugal", earnings: 108},
{name: "Conor McGregor", sport: "MMA", nation: "Ireland", earnings: 99},
{name: "Neymar", sport: "Soccer", nation: "Brazil", earnings: 90},
{name: "LeBron James", sport: "Basketball", nation: "United States", earnings: 85.5},
{name: "Roger Federer", sport: "Tennis", nation: "Switzerland", earnings: 77.2},
{name: "Stephen Curry", sport: "Basketball", nation: "United States", earnings: 76.9},
{name: "Matt Ryan", sport: "Football", nation: "United States", earnings: 67.3},
{name: "Matthew Stafford", sport: "Football", nation: "United States", earnings: 59.5}
]
earnings = d3.rollup(athletes, v => d3.sum(v, d => d.earnings), d => d.nation, d => d.sport)
[...earnings].flatMap(([k1, v1]) => [...v1].map(([k2, v2]) => ({nation: k1, sport: k2, earnings: v2})))
function unroll(rollup, keys, label = "value", p = {}) {
return Array.from(rollup, ([key, value]) =>
value instanceof Map
? unroll(value, keys.slice(1), label, Object.assign({}, { ...p, [keys[0]]: key } ))
: Object.assign({}, { ...p, [keys[0]]: key, [label] : value })
).flat();
}
unroll(earnings, ["nation", "sport"], "earnings")
function rollUnroll(data, reducer, keys, value) {
const rolled = d3.rollup(data, reducer, ...keys.map(k => d => d[k]));
return unroll(rolled, keys, value);
}
rollUnroll(athletes, v => d3.mean(v, d => d.earnings), ["sport"], "earnings")
function groupSum(data, keys, value) {
const rolled = d3.rollup(data, v => d3.sum(v, d => d[value]), ...keys.map(k => d => d[k]));
return unroll(rolled, keys, value);
}
groupSum(athletes, ["sport"], "earnings")
function nest(rollup) {
return Array.from(rollup, ([key, value]) =>
value instanceof Map
? { name: key, children: nest(value) }
: { name: key, value: value }
);
}
data = ({name: "Earnings", children: nest(earnings)})
import { chart } with { data, height } from "@d3/nested-treemap"
chart
d3 = require("d3-array@2.2")
import { radio } from "@jashkenas/inputs"
height = 200
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