Visualization toolmaker. Founder @observablehq. Creator @d3. Former @nytgraphics. Pronounced BOSS-tock.
Published
Edited
Apr 12, 2020
20 stars
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A Timeline of Shelter-in-Place
chart = {
const svg = d3.create("svg")
.attr("viewBox", [0, 0, width, height])
.attr("font-family", "sans-serif")
.attr("font-size", 10);
svg.append("g")
.attr("stroke", "currentColor")
.attr("stroke-width", 2)
.selectAll("line")
.data(data.filter(d => d.start !== null))
.join("line")
.attr("x1", d => x(d.start))
.attr("x2", x(today))
.attr("y1", d => y(d.name))
.attr("y2", d => y(d.name));
svg.append("g")
.call(xAxis);
svg.append("g")
.attr("text-anchor", "end")
.selectAll("text")
.data(data)
.join("text")
.attr("x", d => x(d.start || today) - 6)
.attr("y", d => y(d.name))
.attr("dy", "0.35em")
.text(d => d.name)
.filter(d => d.start)
.append("title")
.text(d => `${d.name}
${d3.utcFormat("%B %-d, %-I:%M %p")(d.start)}`);
svg.append("g")
.selectAll("text")
.data(data)
.join("text")
.attr("x", width - margin.right + 6)
.attr("y", d => y(d.name))
.attr("dy", "0.35em")
.text(d => {
if (d.start === null) return d.partial ? "Partial" : "None";
const day = Math.round((today - d.start) / (1000 * 60 * 60 * 24));
return `${day} day${day === 1 ? "" : "s"}`;
});
svg.append("g")
.selectAll("circle")
.data(data)
.join("circle")
.attr("cx", d => d.start ? x(d.start) : x(today))
.attr("cy", d => y(d.name))
.attr("r", 2)
.attr("fill", d => d.start ? "currentColor" : "none")
.attr("stroke", d => d.start ? "none" : "currentColor");
return svg.node();
}
today = new Date(Date.UTC(2020, 3, 12))
data = [
{name: "Alabama", date: "April 4 at 5 p.m."},
{name: "Alaska", date: "March 28 at 5 p.m."},
{name: "Arizona", date: "March 31 at 5 p.m."},
{name: "Arkansas", date: null},
{name: "California", date: "March 19"},
{name: "Colorado", date: "March 26 at 6 a.m."},
{name: "Connecticut", date: "March 23 at 8 p.m."},
{name: "Delaware", date: "March 24 at 8 a.m."},
{name: "District of Columbia", date: "April 1 at 12:01 a.m."},
{name: "Florida", date: "April 3 at 12:01 a.m."},
{name: "Georgia", date: "April 3"},
{name: "Hawaii", date: "March 25 at 12:01 a.m."},
{name: "Idaho", date: "March 25 at 1:30 p.m."},
{name: "Illinois", date: "March 21 at 5 p.m."},
{name: "Indiana", date: "March 24 at 11:59 p.m."},
{name: "Iowa", date: null},
{name: "Kansas", date: "March 30 at 12:01 a.m."},
{name: "Kentucky", date: "March 26 at 8 p.m."},
{name: "Louisiana", date: "March 23 at 5 p.m."},
{name: "Maine", date: "April 2 at 12:01 a.m."},
{name: "Maryland", date: "March 30 at 8 p.m."},
{name: "Massachusetts", date: "March 24 at 12 p.m."},
{name: "Michigan", date: "March 24 at 12:01 a.m."},
{name: "Minnesota", date: "March 27 at 11:59 p.m."},
{name: "Mississippi", date: "April 3 at 5 p.m."},
{name: "Missouri", date: "April 6 at 12:01 a.m."},
{name: "Montana", date: "March 28 at 12:01 a.m."},
{name: "Nebraska", date: null},
{name: "Nevada", date: "April 1"},
{name: "New Hampshire", date: "March 27 at 11:59 p.m."},
{name: "New Jersey", date: "March 21 at 9 p.m."},
{name: "New Mexico", date: "March 24 at 8 a.m."},
{name: "New York", date: "March 22 at 8 p.m."},
{name: "North Carolina", date: "March 30 at 5 p.m."},
{name: "North Dakota", date: null},
{name: "Ohio", date: "March 23 at 11:59 p.m."},
{name: "Oklahoma", date: null, partial: true},
{name: "Oregon", date: "March 23"},
{name: "Pennsylvania", date: "April 1 at 8 p.m."},
{name: "Rhode Island", date: "March 28"},
{name: "South Carolina", date: "April 7 at 5 p.m."},
{name: "South Dakota", date: null},
{name: "Tennessee", date: "March 31 at 11:59 p.m."},
{name: "Texas", date: "April 2 at 12:01 a.m."},
{name: "Utah", date: null, partial: true},
{name: "Vermont", date: "March 25 at 5 p.m."},
{name: "Virginia", date: "March 30"},
{name: "Washington", date: "March 23"},
{name: "West Virginia", date: "March 24 at 8 p.m."},
{name: "Wisconsin", date: "March 25 at 8 a.m."},
{name: "Wyoming", date: null, partial: true}
]
.map(({date, ...rest}) => ({...rest, start: parseDate(date)}))
.sort((a, b) => d3.ascending(a.start === null, b.start === null) || d3.descending(!!a.partial, !!b.partial) || d3.ascending(a.start, b.start))
parseDate = {
const format1 = d3.utcParse("%B %d");
const format2a = d3.utcParse("%B %d at %I p.m.");
const format2b = d3.utcParse("%B %d at %I:%M p.m.");
const format3a = d3.utcParse("%B %d at %I a.m.");
const format3b = d3.utcParse("%B %d at %I:%M a.m.");
return x => {
let date = null;
if (date = format1(x));
else if (date = format2a(x) || format2b(x)) date.setUTCHours(date.getUTCHours() + 12);
else if (date = format3a(x) || format3b(x));
if (date !== null) date.setUTCFullYear(2020);
return date;
};
}
x = d3.scaleUtc()
.domain([d3.min(data, d => d.start), today])
.rangeRound([margin.left, width - margin.right])
y = d3.scalePoint()
.domain(data.map(d => d.name))
.rangeRound([margin.top, height - margin.bottom])
.padding(1)
xAxis = g => g
.attr("transform", `translate(0,${margin.top})`)
.call(d3.axisTop(x).ticks(width / 80))
.call(g => g.select(".domain").remove())
.call(g => g.append("g")
.attr("stroke", "white")
.attr("stroke-width", 2)
.selectAll("line")
.data(x.ticks(d3.utcDay))
.join("line")
.attr("x1", d => 0.5 + x(d))
.attr("x2", d => 0.5 + x(d))
.attr("y2", height - margin.bottom - margin.top))
margin = ({top: 24, right: 41, bottom: 0, left: 60})
height = data.length * 14
d3 = require("d3@5")
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