<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>Tutorial: a bubble chart with D3</title>
<script src="https://d3js.org/d3.v7.min.js"></script>
</head>
<body>
<h1>A bubble chart with D3</h1>
</body>
</html>
//D3 margin convention, see https://bl.ocks.org/mbostock/3019563
const margin = {top: 20, right: 10, bottom: 20, left: 10};
const width = 800 - margin.left - margin.right;
const height = 600 - margin.top - margin.bottom;
const g = d3.select("body").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", `translate(${margin.left},${margin.top})`);
const dataUrl = "https://docs.google.com/spreadsheets/d/e/2PACX-1vRpzJYEJv9hkwx3ZLaimdpZmrHK_hyPGXlAho_BaM2p_qsWRygvorbif1KvyPP_k0mt6j04vIL0ANUT/pub?gid=43247911&single=true&output=csv"
d3.csv(dataUrl).then(data => {
data.forEach(function(d){
d.income = +d.income;
d.lifeexp = +d.lifeexp;
d.population = +d.population;
})
const maxpop = d3.max(data, d => d.population);
data.sort(function(a,b){
return b.population - a.population;
});
const xScale = d3.scaleLog()
.domain([400,100000])
.range([0,width]);
const yScale = d3.scaleLinear()
.domain([15,90])
.range([height,0])
const rScale = d3.scaleSqrt()
.domain([0, maxpop])
.range([0,50]);
const colors =["#FF265C", "#FFE700", "#4ED7E9", "#70ED02", "purple"];
const colorScale = d3.scaleOrdinal()
.domain(["Asia", "Europe", "Africa", "Americas", "Oceania"])
.range(colors);
g.selectAll("circle")
.data(data)
.join("circle")
.attr("cx", (d) => xScale(d.income))
.attr("cy", (d) => yScale(d.lifeexp))
.attr("r", (d) => rScale(d.population))
.style("fill", (d) => colorScale(d.continent))
.style("stroke", "black")
const yAxis = d3.axisLeft(yScale);
g.append("g")
.attr("transform", "translate(10,0)")
.call(yAxis);
const xAxis = d3.axisBottom(xScale)
g.append("g")
.attr("transform", `translate(10,${height})`)
.call(xAxis);
});
Output
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