Public
Edited
Aug 1, 2023
28 forks
8 stars
Also listed in…
Gallery
Insert cell
Insert cell
chart = {
const width = 928;
const height = width;
const margin = 10;
const innerRadius = width / 5;
const outerRadius = width / 2 - margin;

const x = d3.scaleUtc()
.domain([new Date("2000-01-01"), new Date("2001-01-01") - 1])
.range([0, 2 * Math.PI]);

const y = d3.scaleRadial()
.domain([d3.min(data, d => d.minmin), d3.max(data, d => d.maxmax)])
.range([innerRadius, outerRadius]);

const line = d3.lineRadial()
.curve(d3.curveLinearClosed)
.angle(d => x(d.date));

const area = d3.areaRadial()
.curve(d3.curveLinearClosed)
.angle(d => x(d.date));

const svg = d3.create("svg")
.attr("width", width)
.attr("height", height)
.attr("viewBox", [-width / 2, -height / 2, width, height])
.attr("style", "width: 100%; height: auto; font: 10px sans-serif;")
.attr("stroke-linejoin", "round")
.attr("stroke-linecap", "round");

svg.append("path")
.attr("fill", "lightsteelblue")
.attr("fill-opacity", 0.2)
.attr("d", area
.innerRadius(d => y(d.minmin))
.outerRadius(d => y(d.maxmax))
(data));

svg.append("path")
.attr("fill", "steelblue")
.attr("fill-opacity", 0.2)
.attr("d", area
.innerRadius(d => y(d.min))
.outerRadius(d => y(d.max))
(data));

svg.append("path")
.attr("fill", "none")
.attr("stroke", "steelblue")
.attr("stroke-width", 1.5)
.attr("d", line
.radius(d => y(d.avg))
(data));

svg.append("g")
.selectAll()
.data(x.ticks())
.join("g")
.each((d, i) => d.id = DOM.uid("month"))
.call(g => g.append("path")
.attr("stroke", "#000")
.attr("stroke-opacity", 0.2)
.attr("d", d => `
M${d3.pointRadial(x(d), innerRadius)}
L${d3.pointRadial(x(d), outerRadius)}
`))
.call(g => g.append("path")
.attr("id", d => d.id.id)
.datum(d => [d, d3.utcMonth.offset(d, 1)])
.attr("fill", "none")
.attr("d", ([a, b]) => `
M${d3.pointRadial(x(a), innerRadius)}
A${innerRadius},${innerRadius} 0,0,1 ${d3.pointRadial(x(b), innerRadius)}
`))
.call(g => g.append("text")
.append("textPath")
.attr("startOffset", 6)
.attr("xlink:href", d => d.id.href)
.text(d3.utcFormat("%B")));

svg.append("g")
.attr("text-anchor", "middle")
.selectAll()
.data(y.ticks().reverse())
.join("g")
.call(g => g.append("circle")
.attr("fill", "none")
.attr("stroke", "currentColor")
.attr("stroke-opacity", 0.2)
.attr("r", y))
.call(g => g.append("text")
.attr("y", d => -y(d))
.attr("dy", "0.35em")
.attr("stroke", "#fff")
.attr("stroke-width", 5)
.attr("fill", "currentColor")
.attr("paint-order", "stroke")
.text((x, i) => `${x.toFixed(0)}${i ? "" : "°F"}`)
.clone(true)
.attr("y", d => y(d)));

return svg.node();
}
Insert cell
data = d3
.groups(
await FileAttachment("sfo-temperature.csv").csv({typed: true}),
({DATE}) => new Date(Date.UTC(2000, DATE.getUTCMonth(), DATE.getUTCDate())), // group by day of year
)
.sort(([a], [b]) => d3.ascending(a, b)) // sort chronologically
.map(([date, v]) => ({
date,
avg: d3.mean(v, d => d.TAVG || NaN),
min: d3.mean(v, d => d.TMIN || NaN),
max: d3.mean(v, d => d.TMAX || NaN),
minmin: d3.min(v, d => d.TMIN || NaN),
maxmax: d3.max(v, d => d.TMAX || NaN)
}))
Insert cell

One platform to build and deploy the best data apps

Experiment and prototype by building visualizations in live JavaScript notebooks. Collaborate with your team and decide which concepts to build out.
Use Observable Framework to build data apps locally. Use data loaders to build in any language or library, including Python, SQL, and R.
Seamlessly deploy to Observable. Test before you ship, use automatic deploy-on-commit, and ensure your projects are always up-to-date.
Learn more