Contour Labels (canvas)Coordinated mapsgeoformatSmall circle testKruskal MazeAll the geoshapesReprojecting Vector TilesCloud ContoursHello h3-jsClipping AlbersTranslucent EarthThe truth about the Mercator projectionUsing d3-inertia with observableMercator projection of a Mercator globeD3 Vector Tiles (WIP)Finding intersections between the graticule and the clip sphere of the stereographic projection, method 2Plate tectonicsAnother hex mapEquateur & tropiquesTissot's indicatrixDistance to shoreMultiPolygon clippingSouth Africa’s medial axisSpherical intersectionVolcano Semis (points circulaires)Pencil Airocean45° mapNetCDFBlue noise sphereRubber DymaxionSpherical quasi-random (R2) distributionAutomated label placement (countries)Automated label placement (France)Automated label placement (cities)d3.geoIntersectArcDelaunay.findTriangled3-geo-voronoi and gridded dataElevation vtk.jsMapfillKrigingSpherical HeatmapReproject elevation tiles — detailReproject elevation tiles — worldFisheye Conformal MapSpherical KDE InterpolationSpherical kernel interpolation with nearest neighborsShepard’s methodModified Shepard’s methodSpherical contoursGeo Voronoi interpolationBlurry contoursHow much warmer? (BBC)H3 hexagons & geoContoursHillshading & supersamplingH3 odditiesManhattan VoronoiManhattan Voronoi IIGeoJSON feature editorColorized Manhattan Spanning Treelegra mapslegra country mapsThe complex logarithm projectionCountries small multipleThe 2D approximate Newton-Raphson methodOceanAttitudeCount visible objectsThe Gray-Fuller spatial gridGray-Fuller grid metricsGray-Fuller grid odditiesSpherical smallest-circle problemCountries Enclosing CirclesFullscreen Seamless Zoomable Map TilesMap Pan & ZoomSpherical EllipsesSynchronized projectionsThe closest countryTriangular tiling of icosahedronHello, polygon-clippingCorées / KoreasHello, procedural-glHello, placekeyZoom World ChoroplethClipping spherical polygonsSpherical phyllotaxisFour-color world map with ClingoHello, jsgeoda!The Sun’s analemmaWorld of squaresWorld of squares (spherical)A map of AfricaTagged bordersClipped geoVoronoiBlue noise sphere IISpherical Perlin NoiseSpherical Delaunay triangulationDynamic simplificationRewindPlot: Voronoi labelsAoC 12: shortest path under constraintsHello, pixi.jsFlight PathsRay out of a convex hullDistance to a segment
Bounding Circles
drawCountries = {
const context = DOM.context2d(width, height),
path = d3.geoPath(projection, context);
yield context.canvas;
context.beginPath();
path({ type: "Sphere" });
context.stroke();
context.lineWidth = .5;
for (const circle of countries.features.map(encloseFeature)) {
context.beginPath();
path(
d3
.geoCircle()
.center(circle.c)
.radius(circle.r)()
);
context.fillStyle = color(circle.r);
context.globalAlpha = .2;
context.fill();
context.globalAlpha = 1;
context.stroke();
}
context.globalAlpha = .1;
context.fillStyle = "#000";
context.beginPath();
path(countries);
context.fill();
}
import { enclose } from "@fil/spherical-smallest-circle-problem"
function encloseFeature(f) {
const { type, coordinates } = f.geometry;
return enclose(
coordinates.flat(type == "Polygon" ? 1 : 2) /*.map(d => ((d[2] = 0.1), d))*/
);
}
d3 = require("d3@5", "d3-geo-projection@2")
countries = fetch(
"https://unpkg.com/visionscarto-world-atlas@0.0.6/world/110m_countries.geojson"
).then(d => d.json())
projection = d3
.geoLarrivee()
.rotate([-10, 0])
.fitExtent([[2, 2], [width - 2, height - 2]], { type: "Sphere" })
color = d3.scaleOrdinal(d3.schemeDark2)
import { select } from "@jashkenas/inputs"
height = 720
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