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<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
font: 10px sans-serif;
}
.notes {
font-size:14px;
}
.group-tick line {
stroke: #ddd;
}
.ribbon {
fill-opacity: 0.4;
stroke-width: 1;
stroke-opacity: 0.1;
}
.ribbon:hover {
fill-opacity: 1;
stroke-opacity: 1;
}
</style>
<svg width="700" height="700"></svg>
<script src="http://d3js.org/d3.v4.0.0-alpha.50.min.js"></script>
<script src="http://d3js.org/d3-chord.v0.0.min.js"></script>
<script>
const get = (url) => new Promise((resolve, reject) => {
const req = new XMLHttpRequest();
req.addEventListener('load', listener.bind(null, resolve, reject));
req.open('GET', url);
req.send();
});
const listener = (resolve, reject, { srcElement: req }) => {
req.status === 200 ? resolve(req.responseText) : reject("busted");
};
const buildLookup = (endpoints, result) => {
const lookup = {};
result.map((v, i) => {
const json = JSON.parse(v);
const address = endpoints[i].split('.').shift();
lookup[address] = json;
});
// Team list is ~220 items; assign indices to only teams in this tournament.
lookup.reducedTeams = lookup.games.reduce((acc, v) => {
if (acc[v.t1] === undefined) {
acc[v.t1] = Object.keys(acc).length;
}
return acc;
}, {});
return lookup;
};
const buildChordMatrix = (games, reducedTeams) => {
// Create A x A array of nulls; null-null relationships are omitted.
const empty = Array.apply(null, Array(Object.keys(reducedTeams).length));
const result = empty.map(() => empty.map(() => null));
games.forEach(v => {
// Use indexes from reduced lists to populate final matrix.
const t1 = reducedTeams[v.t1];
const t2 = reducedTeams[v.t2];
result[t1][t2] = v.s1 + v.s1e + v.s1p;
result[t2][t1] = v.s2 + v.s2e + v.s2p;
}, []);
return result;
};
const buildMetaMatrix = (games, reducedTeams) => {
// Identical structure of chord matrix but with { game, team }.
// (Was this a useful comment? I was considering deleting it. Ben 161017)
const empty = Array.apply(null, Array(Object.keys(reducedTeams).length));
const matrix = empty.map(() => empty.map(() => null));
games.forEach(g => {
const t1 = reducedTeams[g.t1];
const t2 = reducedTeams[g.t2];
matrix[t1][t2] = { game: g, team: g.t1 };
matrix[t2][t1] = { game: g, team: g.t2 };
}, []);
return matrix;
};
const teamNameFromIndex = (lookup, index) => {
for (let i in lookup.reducedTeams) {
if (lookup.reducedTeams[i] === index) {
return lookup.teams[i];
}
}
return "Unknown";
};
const endpoints = ['teams.json', 'rounds.json', 'games.json'];
const main = (data) => {
const lookup = buildLookup(endpoints, data);
const chordMatrix = buildChordMatrix(lookup.games, lookup.reducedTeams)
const metaMatrix = buildMetaMatrix(lookup.games, lookup.reducedTeams)
const svg = d3.select("svg"),
width = +svg.attr("width"),
height = +svg.attr("height"),
outerArcThickness = 5,
outerRadius = Math.min(width, height) * 0.5 - 100,
innerRadius = outerRadius - outerArcThickness;
const chord = d3.chord()
.padAngle(0.05);
const arc = d3.arc()
.innerRadius(innerRadius)
.outerRadius(outerRadius);
const ribbon = d3.ribbon()
.radius(innerRadius);
// const color = d3.scaleOrdinal(d3.schemeCategory20);
// const color = d3.scaleOrdinal(d3.schemeCategory10);
// const color = d3.scaleOrdinal(d3.interpolateCool);
// const color = d3.scaleSequential(d3.interpolateRainbow);
const color = d3.scaleLinear().domain([0,10]).range(["red", "blue"]).interpolate(d3.interpolateRgb)
// const colors = ["#f1eef6","#d4b9da","#c994c7","#df65b0","#e7298a","#ce1256","#91003f"];
// const colors = ["#ffffcc","#c7e9b4","#7fcdbb","#41b6c4","#1d91c0","#225ea8","#0c2c84"];
// const colors = ["#7fcdbb","#41b6c4","#1d91c0","#225ea8","#253494","#081d58"];
// const colors = ["#1B9E77", "#D95F02", "#7570B3", "#E7298A", "#66A61E", "#E6AB02", "#A6761D", "#666666"];
// const color = i => colors[i % colors.length];
const g = svg.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")")
.datum(chord(chordMatrix));
const group = g.append("g")
.attr("class", "groups")
.selectAll("g")
.data(function(chords) { return chords.groups; })
.enter().append("g");
group.append("path")
.style("fill", function(d) { return color(d.index); })
.style("stroke", function(d) { return d3.rgb(color(d.index)).darker(); })
.attr("d", arc)
group.append("text")
.each(function(d) { d.angle = (d.startAngle + d.endAngle) / 2; })
.attr("dy", ".35em")
.attr("transform", function(d) {
return "rotate(" + (d.angle * 180 / Math.PI - 90) + ")"
+ "translate(" + (innerRadius + 26) + ")"
+ (d.angle > Math.PI ? "rotate(180)" : "");
})
.style("text-anchor", function(d) { return d.angle > Math.PI ? "end" : null; })
.text(function(d) {
// SORT BY GOALS SCORED
// SORT BY ALPHABETICAL
// SORT BY COUNTRY SIZE
// SORT BY COUNTRY POPULATION
// COLOR BY CONTINENT
// STRANGE EXTENDED TIME CHILE-BRAZIL - FIX BY HAND?
return teamNameFromIndex(lookup, d.index);
});
g.append("g")
.attr("class", "ribbons")
.selectAll("path")
.data(function(chords) { return chords; })
.enter().append("path")
.attr("d", ribbon)
.style("fill", function(d) { return color(d.target.index); })
.style("stroke", function(d) { return d3.rgb(color(d.target.index)).darker(); })
.attr("class", "ribbon")
.append("title")
.text(function(d) {
const meta1 = metaMatrix[d.target.index][d.source.index];
const meta2 = metaMatrix[d.source.index][d.target.index];
const g = meta1.game;
const t1 = lookup.teams[g.t1];
const t2 = lookup.teams[g.t2];
const e1 = g.s1e ? `(+${g.s1e} in extended time)` : '';
const e2 = g.s2e ? `(+${g.s2e} in extended time)` : '';
const p1 = g.s1p ? `(+${g.s1p} in penalties)` : '';
const p2 = g.s2p ? `(+${g.s2p} in penalties)` : '';
return `${t1}: ${g.s1} ${e1} ${p1}\n${t2}: ${g.s2} ${e2} ${p2}`;
});
};
//===== Entry point
Promise.all(endpoints.map(get)).then(main);
</script>
<div class="notes">
<h5>Lessons learned</h5>
scaleOrdinal vs scaleLinear (only 2 colors!) vs interpolateCool vs d3.schemeColor20c<br>
ribbon source vs index (change fill them differently)
<a href="https://github.com/d3/d3-scale-chromatic">https://github.com/d3/d3-scale-chromatic</a>
https://bost.ocks.org/mike/uberdata/
http://bl.ocks.org/mbostock/1046712
https://bl.ocks.org/mbostock/4062006
http://projects.delimited.io/experiments/chord-transitions/demos/trade.html
https://github.com/jokecamp/sportdb-build-scripts
https://groups.google.com/forum/#!topic/opensport/593H1O7yIdE
https://github.com/openfootball/datafile/blob/master/worldcup.rb
https://openfootball.github.io/questions.html
<h5>TODO</h5>
add team name to each arc
build dataset
tweet it!
</div>