Freelance web app developer with a focus on data vis and science communication.
Plot.plot({
aspectRatio: 0.6,
marginLeft: 90,
width: 1152,
style: `
margin: 0 -14px;
background: #111;
color: #fff;
max-width: none;
text-transform: uppercase;
width: calc(100% + 28px);
`,
x: {domain: d3.range(1, 40), axis: null}, // day of month, aligned by day of week
y: {domain: d3.range(12)}, // month of year
length: {type: "identity"}, // overloading meaning as lunar phase angle!
marks: (({data, x, y, r, hemisphere, projection}) => [
Plot.axisY({textAnchor: "start", tickFormat: Plot.formatMonth(locale, "long"), tickSize: 0, dx: -50}),
Plot.dot(data, {x, y, r, fill: "#fff"}),
Plot.text(data, {x, y, r, text: (d) => d.getUTCDate(), dy: -r - 5, fontSize: 7}),
Plot.vector(data, {
x,
y,
length(d) {
const noon = d3.utcHour.offset(d, 12);
const illum = suncalc.getMoonIllumination(noon);
return 180 - illum.phase * 360;
},
shape: {
draw(context, length) {
projection.rotate([length, 180]).scale(r);
const path = d3.geoPath(projection, context);
path(hemisphere);
}
},
anchor: "start", // disable default translate along length
fill: "#333"
})
])({
data: (() => {
const start = d3.utcYear(Date.UTC(year, 0, 1));
return d3.utcDays(start, d3.utcYear.offset(start));
})(),
x(d) {
const start = d3.utcMonth(d);
const offset = start.getUTCDay() || 7;
return d.getUTCDate() + offset;
},
y(d) {
return d.getUTCMonth();
},
r: 12,
hemisphere: d3.geoCircle()(),
projection: d3.geoOrthographic().translate([0, 0])
})
})
suncalc = (await import("https://cdn.jsdelivr.net/npm/suncalc@1/+esm")).default
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.