The avatar for @mbostock
Mike Bostock
Visualization toolmaker. Founder @observablehq. Creator @d3. Former @nytgraphics. Pronounced BOSS-tock.
Published
Explorables
Edited
Dec 11, 2021
6 forks
36 stars
Explorables
Raft Consensus SimulatorJulia sets and the Mandelbrot setHow a power law emerges from aggregationLambert's Cosine LawSorting AlgorithmsFaceted SnowPeriodic Planar Three-Body OrbitsBicycle Drivetrain AnalyzerIntroduction to Linear RegressionKaplan-Meier CurvesBaseline GridHow Raymarching Works?Cell SettlingAn Easier-to-Use Sine BarInferring chart type from autocorrelation and other evilsVariable Thickness BandHyperbolic planeTorus KnotsLet’s Try t-SNE!Routes to chaosHow to build a Teachable Machine with TensorFlow.jsBoba ScienceBoidsPredator and Prey
De Casteljau’s Algorithm
Centerline labelingA visually more appealing fisheye functionFederal Budget in a Bottle2D point in triangle testBMI CalculatorSoundsThere’s Plenty of Room in the Cornerst-SNE explained in plain javascriptCircles, Spirals and SunflowersMini de Jong AttractorBeta-Distributed Random Values
Insert cell
Insert cell
Insert cell
Insert cell
Insert cell
mutable B0 = [[0.05, 20], [0.25 ,360], [0.75, 460], [0.95, 20]].map(([x, y]) => [x * Math.min(640, width), y])
Insert cell
Insert cell
function lerp([x0, y0], [x1, y1], t) {
const s = 1 - t;
return [x0 * s + x1 * t, y0 * s + y1 * t];
}
Insert cell
Insert cell
B1 = [lerp(B0[0], B0[1], t), lerp(B0[1], B0[2], t), lerp(B0[2], B0[3], t)]
Insert cell
Insert cell
Insert cell
B2 = [lerp(B1[0], B1[1], t), lerp(B1[1], B1[2], t)]
Insert cell
Insert cell
Insert cell
B3 = [lerp(B2[0], B2[1], t)]
Insert cell
Insert cell
Insert cell
Insert cell
Insert cell
Insert cell
Insert cell
height = 480
Insert cell
{
d3.selectAll(".line0").attr("d", `M${B0.join("L")}`);
d3.selectAll(".line1").attr("d", `M${B1.join("L")}`);
d3.selectAll(".line2").attr("d", `M${B2.join("L")}`);
d3.selectAll(".dot").attr("cx", B3[0][0]).attr("cy", B3[0][1]);
d3.selectAll(".bezier2a").attr("d", `M${B0[0]}Q${B0.slice(1, 3).join(" ")}`);
d3.selectAll(".bezier2b").attr("d", `M${B0[1]}Q${B0.slice(2, 4).join(" ")}`);
d3.selectAll(".bezier3").attr("d", `M${B0[0]}C${B0.slice(1).join(" ")}`);
d3.selectAll(".points circle").attr("cx", d => d[0]).attr("cy", d => d[1]);
}
Insert cell

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.
Learn more