Published
Edited
Jul 16, 2020
4 stars
Contour Labels (canvas)Coordinated mapsgeoformatSmall circle testKruskal MazeAll the geoshapesReprojecting Vector TilesHello 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 problemBounding CirclesCountries 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
Cloud Contours
Also listed in…
Algorithms
d3 = require("d3@5")
imagesrc =
"https://cors-anywhere.herokuapp.com/https://gist.githack.com/mbostock/818053c76d79d4841790c332656bf9da/raw/94f23ce8973297355271ae07f3c718486ef729e7/cloud-fraction.png"
function image(url) {
return new Promise(function(resolve, reject) {
var image = new Image();
image.src = url;
image.crossOrigin = "Anonymous";
image.onload = function() {
var canvas = document.createElement("canvas");
canvas.width = image.width;
canvas.height = image.height;
var context = canvas.getContext("2d");
context.drawImage(image, 0, 0);
resolve(context.getImageData(0, 0, image.width, image.height));
};
image.onerror = reject;
});
}
loaded = image(imagesrc)
[loaded.width, loaded.height]
blurred = {
const blurred = new ImageData(
new Uint8ClampedArray(loaded.data),
loaded.width,
loaded.height
);
StackBlur(blurred.data, blurred.width, blurred.height, blur_radius);
return blurred;
}
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