Visualization toolmaker. Founder @observablehq. Creator @d3. Former @nytgraphics. Pronounced BOSS-tock.
Guided Tour of an Infinite Sphere GridCreating a Canvas Noise Map for Generative Art012 Truchet tiles014 Joy Division016 Some TrianglesConnections 2Stacking Polygons In A CircleSplitting LinesBulge IllusionVoronoi Spirals IIPerlin Noise ContoursTruchet Tiles variant: Intertwined quarter circlesGetting Artsy With LloydUlam SpiralOil painting brushstrokesRotating VoronoiBridget Riley 3SphoiseTriangles And CirclesYvaral IITwo GridsRandomized Flood FillOrientedTrefoilsMeandering VoronoiVoronoi StipplingSubstrateIncremental Drift (Rose Equation)Circles, Spirals and SunflowersVoronoi Stained Glass PortraitsYvaralMy first Observable Notebook - Art of πQuadtree ArtFitzHugh–Nagumo MazeBridget RileyStructure de QuadrilatèresFractal TreePencil TraceAltered World
Eyes
canvas = {
const context = DOM.context2d(width, height);
context.canvas.style = "width: 100%; height: auto;";
return Object.assign(context.canvas, {
update(mouse) {
let {left: cx, top: cy} = context.canvas.getBoundingClientRect();
let {x: mx, y: my} = mouse;
mx -= cx;
my -= cy;
context.clearRect(0, 0, width, height);
for (let i = 0, n = circles.length; i < n; ++i) {
const {x, y, r} = circles[i];
context.save();
context.translate(x, y);
context.beginPath();
context.arc(0, 0, r, 0, 2 * Math.PI);
context.fillStyle = d3.schemePastel2[i % 8];
context.fill();
const dx = mx - x, dy = my - y, l = Math.sqrt(dx ** 2 + dy ** 2);
context.beginPath();
if (l < r * 2 / 3) context.arc(dx, dy, r / 3, 0, 2 * Math.PI);
else context.arc(dx / l * r * 2 / 3, dy / l * r * 2 / 3, r / 3, 0, 2 * Math.PI);
context.fillStyle = "#333";
context.fill();
context.restore();
}
}
});
}
update = canvas.update(mouse)
mouse = Generators.observe(notify => {
const moved = (event) => notify({ x: event.clientX, y: event.clientY });
addEventListener("mousemove", moved);
notify({x: innerWidth / 2, y: innerHeight / 2});
return () => removeEventListener("mousemove", moved);
})
height = 600
padding = 3
random = d3.randomUniform(padding + 5, padding + 100)
circles = {
const radii = d3.range(100).map(random);
const circles = d3.packSiblings(radii.map(r => ({r})));
for (const circle of circles) {
circle.x += width / 2;
circle.y += height / 2;
circle.r -= padding;
}
return circles;
}
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.
