Big π / Fil | Observable

Vocateur.

Published

Edited

Aug 19, 2020

4 stars

Hello, PGLite INSEE Parquet Hello, apcach DruidJS worker Hello, Orbit Word Tour: 40k words and their friends Hello, spectral.js Hello, petite-vue Hello, @thi.ng/grid-iterators Hello, thumbhash Hello, SwissGL Hello, QOI (and glitches)Hello, orb Hello, cosmograph Hello, Tabulator Using d3.blur with Plot Math.cbrt Hello debounce Colorcet Hello, glii Hello, Open Meteo Hello, PyWavelets Hello, typesense Hello, libgif Hello, kmeans-engine Happy anniversary, Project Gutenberg!Hello, fflate Hello, ArchieML!Hello, d3-bboxCollide Hello, jsgeoda!Hello, EDTF!Hello, protovis!Hello, placekey Hello, fuse.js Hello, Reorder.js Hello, shadow DOM jszip Hello, procedural-gl Hello, qhull Hello, genetic-js DruidJS Hello, Tippy.js Hello, paintWorklet

Big π

Hello, Autoencoder Hello, Shakespearean UUIDs Hello, ccwt.js Hello, constrainautor Hello, talisman Hello, polygon-offset Hello p-queue Hello async-pool Hello rollup-plugin-ascii Hello, algebra.js Hello, pixi.js Hello, d3-render Hello zip/unzip Cumulative Wikipedia Donations HTML <details>regl texture Hello, npyjs Hello protobuf Hello, pencil touch Hello, LOESS Hello html2canvas legra maps color2css Hello, ecsy 2D point distributions Hello, delatin The gpu.js loop Dijkstra’s shortest-path tree Hello nojacko/Dijkstras-js Hello, tcort/dijkstrajs Hello, lambdabaa/dijkstra Hello, gpu.js v2 Hello jsqr Hello qrcode Hello SharedArrayBuffer Hello GamePad API Hello vtk.js Hello nd4js Hello Biofabric Travelling with a self-organizing map Hello glitch Hello UMAP-js Hello pandemonium Hello iocane Hello JSON-editor Hello d3-gridding Hello mljs/knn Worker Hello lalolib Image to GPU.js Image to blink.js Tissot's indicatrix Vega projections Hello WebCLGL Using d3-inertia with observable Video contouring 3 ngraph: pagerank, louvain…Union-Find Perceptron (simple statistics)mljs Hello h3-js Emoji Flags Hello, poisson-disk-sampling

Big = require('big.js')

π = pi(1048)

pi(10, false)

function* pi(n, incremental = true) {

const $ = Big;

$.DP = n; // Big digits precision

let x = $(0),

k;

for (k = 0; ; k++) {

const y = x.plus(

$(4)

.div(8 * k + 1)

.minus($(2).div(8 * k + 4))

.minus($(1).div(8 * k + 5))

.minus($(1).div(8 * k + 6))

.div($(16).pow(k))

);

if (y.eq(x)) break;

x = y;

if (incremental) yield palatable(x);

}

if (!incremental) yield x;

function palatable(x) {

const c = x.c.slice();

c.splice(x.s, 0, ".");

const overflow = "overflow-wrap:break-word; overflow-wrap:anywhere;"

return html`<p style="${overflow}">${c.join("")}`;

}

}

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.