Published
Edited
Nov 19, 2020
1 star
md`# Members of (Croatian) Parliament by party affiliation`
chart = {
const svg = d3.create("svg").attr("viewBox", [0, 0, width + 60, height]);
const { nodes, links } = sankey({
nodes: graph.nodes.map(d => Object.assign({}, d)),
links: graph.links.map(d => Object.assign({}, d))
});
svg
.append("g")
.selectAll("rect")
.data(nodes)
// .join("rect")
// .attr("x", d => d.x0 + 60)
// .attr("y", d => d.y0)
// .attr("height", d => d.y1 - d.y0)
// .attr("width", d => d.x1 - d.x0)
.append("title")
.text(d => `${d.name}\n${d.value.toLocaleString()}`);
svg
.append("g")
.attr('transform', 'translate(30,0)')
.attr("fill", "none")
.selectAll("g")
.data(links)
.join("path")
.attr("d", d3.sankeyLinkHorizontal())
.attr("stroke", d => {
console.log(d.names[0], color(d.names[0]));
return color(d.names[0]);
})
.attr("stroke-width", d => d.width)
.style("mix-blend-mode", "multiply")
.append("title")
.text(d => `${d.names.join(" → ")}\n${d.value.toLocaleString()}`);
svg
.append("g")
.style("font", "10px sans-serif")
.selectAll("text")
.data(nodes)
.join("text")
.attr("x", d => (d.x0 < width / 2 ? d.x1 + 22 : d.x0 + 60))
.attr("y", d => (d.y1 + d.y0) / 2)
// .attr("dy", "0.35em")
//.attr("text-anchor", d => (d.x0 < width / 2 ? "start" : "end"))
.attr("text-anchor", "end")
.text(d => d.name)
.append("tspan")
// .append("text")
// .attr("fill-opacity", 0.7)
.attr("dx", "-20px")
.attr("dy", "1.2em")
.text(d => (d.x0 < width / 2 ? ` ${d.value.toLocaleString()}` : ''));
return svg.node();
}
sankey({
nodes: graph.nodes.map(d => Object.assign({}, d)),
links: graph.links.map(d => Object.assign({}, d))
})
color('Ostali')
color = d3
.scaleOrdinal(["HDZ", "SDP", "Ostali"], ["blue", "red", "lightgrey"])
.unknown("white")
keys = data.columns.slice(0, -1)
data = {
let rawData = d3.csvParse(
await FileAttachment('stranke@4.csv').text(),
d3.autoType
);
//{vote: "Remain", group: "Soft or Stay Home", value: 239}
//{stranka: "HDZ", saziv: "1990", value: 23
let retval = new Array();
let sdp = rawData.filter(
d => d.Party == 'Social Democratic Party of Croatia'
);
electionYears.forEach(year => {
retval.push({
Stranka: 'SDP',
Saziv: year.toString(),
value: sdp[0][year]
});
});
let smrtnici = rawData.filter(
d =>
d.Party != 'Croatian Democratic Union' &&
d.Party != 'Social Democratic Party of Croatia'
);
let smrtniciSum = {};
//handle all others
smrtnici.forEach(party => {
electionYears.forEach(year => {
if (smrtniciSum[year] == null) {
smrtniciSum[year] = 0;
}
smrtniciSum[year] += party[year];
});
});
electionYears.forEach(year => {
retval.push({
Stranka: 'Ostali',
Saziv: year.toString(),
value: smrtniciSum[year]
});
});
//handle HDZ:
let hdz = rawData.filter(d => d.Party == 'Croatian Democratic Union');
electionYears.forEach(year => {
retval.push({
Stranka: 'HDZ',
Saziv: year.toString(),
value: hdz[0][year]
});
});
retval.columns = ['Stranka', 'Saziv', 'value'];
return retval;
}
sankey = d3
.sankey()
.nodeSort(null)
.linkSort(null)
.nodeWidth(4)
.nodePadding(20)
.extent([[0, 5], [width, height - 5]])
height = 600
graph = {
let index = -1;
const nodes = [];
const nodeByKey = new Map();
const indexByKey = new Map();
const links = [];
for (const k of keys) {
for (const d of data) {
const key = JSON.stringify([k, d[k]]);
if (nodeByKey.has(key)) continue;
const node = { name: d[k] };
nodes.push(node);
nodeByKey.set(key, node);
indexByKey.set(key, ++index);
}
}
for (let i = 1; i < keys.length; ++i) {
const a = keys[i - 1];
const b = keys[i];
const prefix = keys.slice(0, i + 1);
const linkByKey = new Map();
for (const d of data) {
const names = prefix.map(k => d[k]);
const key = JSON.stringify(names);
const value = d.value || 1;
let link = linkByKey.get(key);
if (link) {
link.value += value;
continue;
}
link = {
source: indexByKey.get(JSON.stringify([a, d[a]])),
target: indexByKey.get(JSON.stringify([b, d[b]])),
names,
value
};
links.push(link);
linkByKey.set(key, link);
}
}
return { nodes, links };
}
d3 = require("d3@6", "d3-sankey@0.12")
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