Published
Edited
Nov 9, 2019
1 star
chart = {
const svg = d3.create("svg")
.attr("viewBox", [0, 0, width, height]);
const pattern = svg.append('pattern')
.attr('id', 'pattern')
.attr('x', 0)
.attr('y', 0)
.attr('width', 50)
.attr('height', height)
.attr('patternUnits', 'userSpaceOnUse');
const ticks = y.ticks();
const yTickHeight = y(ticks[0]) - y(ticks[1]);
pattern.selectAll('rect').data(y.ticks())
.join('rect')
.attr('x', 0)
.attr('y', d => y(d))
.attr('width', 50)
.attr('height', yTickHeight)
.attr('fill', color);
svg.append("g")
.attr("fill", `url(${new URL("#pattern", location)})`)
.selectAll("rect")
.data(data)
.join("rect")
.attr("x", d => x(d.name))
.attr("y", d => y(d.value))
.attr("height", d => y(0) - y(d.value))
.attr("width", x.bandwidth());
svg.append("g")
.call(xAxis);
svg.append("g")
.call(yAxis);
return svg.node();
}
data = (await d3.csv("https://gist.githubusercontent.com/mbostock/81aa27912ad9b1ed577016797a780b2c/raw/3a807eb0cbb0f5904053ac2f9edf765e2f87a2f5/alphabet.csv", ({letter, frequency}) => ({name: letter, value: +frequency}))).sort((a, b) => b.value - a.value)
x = d3.scaleBand()
.domain(data.map(d => d.name))
.range([margin.left, width - margin.right])
.padding(0.1)
y = d3.scaleLinear()
.domain([0, d3.max(data, d => d.value)]).nice()
.range([height - margin.bottom, margin.top])
color = d3.scaleSequential(d3.interpolateRdPu)
.domain(y.domain())
xAxis = g => g
.attr("transform", `translate(0,${height - margin.bottom})`)
.call(d3.axisBottom(x).tickSizeOuter(0))
yAxis = g => g
.attr("transform", `translate(${margin.left},0)`)
.call(d3.axisLeft(y))
.call(g => g.select(".domain").remove())
height = 500
margin = ({top: 20, right: 0, bottom: 30, left: 40})
d3 = require("d3@5")
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