map = htl.html`<svg viewBox="0 0 ${width} ${height}" style="display: block;">
//sea
<path d="${path(outline)}" fill="#8283ff"></path>
//grid
<path d="${path(graticule)}" stroke="#f3f3f3" fill="none"></path>
//land
<path d="${path(land)}" fill="#737380"></path>
<path d="${path(borders)}" fill="none" stroke="#f1f1f1"></path>
<path d="${path(outline)}" fill="none" stroke="#f2f2f2"></path>
</svg>`
projection = d3.geoEqualEarth()
path = d3.geoPath(projection)
height = {
const [[x0, y0], [x1, y1]] = d3.geoPath(projection.fitWidth(width, outline)).bounds(outline);
const dy = Math.ceil(y1 - y0), l = Math.min(Math.ceil(x1 - x0), dy);
projection.scale(projection.scale() * (l - 1) / l).precision(0.2);
return dy;
}
outline = ({type: "Sphere"})
graticule = d3.geoGraticule10()
land = topojson.feature(world, world.objects.land)
borders = topojson.mesh(world, world.objects.countries, (a, b) => a !== b)
world = FileAttachment("countries-50m.json").json()
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
