Published
Edited
Feb 26, 2019
d3 = require("d3@5")
PM25 = d3.tsv("https://gist.githubusercontent.com/haoshuai999/522ab055dea4a42ce610e8030fd45bb9/raw/a4597673f23a10659e40eee2d0ba4d439b10d332/Dataset%2520PM2.5_50%25202016.tsv", ({Country, City, Annualmean}) => ({country: Country, city: City, value: +Annualmean}))
margin = ({top: 60, right: 30, bottom: 30, left: 30})
height = PM25.length * 50 + margin.top + margin.bottom
y = d3.scaleLinear()
.domain([0, d3.max(PM25, d => d.value)])
.range([height - margin.bottom, margin.top])
x = d3.scaleBand()
.domain(PM25.map(d => d.city))
.range([margin.left, width - margin.right])
.padding(0.5)
yAxis = g => g
.attr("transform", `translate(${margin.left},0)`)
.call(d3.axisLeft(y))
//.call(g => g.select(".domain").remove())
xAxis = g => g
.attr("transform", `translate(0,${height - margin.bottom})`)
.call(d3.axisBottom(x))
//.call(g => g.select(".domain").remove())
chart = {
const svg = d3.select(DOM.svg(width, height));
svg.append("g")
.attr("fill", "steelblue")
.selectAll("rect")
.data(PM25)
.join("rect")
.attr("x", d => x(d.city))
.attr("y", d => y(d.value))
.attr("width", x.bandwidth())
.attr("height", d => y(0) - y(d.value));
svg.append("g")
.attr("fill", "white")
.attr("text-anchor", "end")
.style("font", "12px sans-serif")
.selectAll("text")
.data(PM25)
.join("text")
.attr("x", d => x(d.city) + x.bandwidth() / 2 + 5)
.attr("y", d => y(d.value) + 6)
.attr("dy", "0.35em")
.text(d => d.value);
svg.append("g")
.call(xAxis);
svg.append("g")
.call(yAxis);
svg.append("text")
.style("fill", "black")
.style("font-size", "25px")
.attr("class", "title")
.attr("x",width/2)
.attr("y", (margin.top /2) )
.attr("text-anchor", "middle")
.text("PM2.5 in 10 cities (2016)");
return svg.node();
}
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