31:[{"id":"672309433a04cf0a6fc24a7127a85f9d7350d6012453b3bc11f5d1580f9223341f8ad8d0a484b481b67283ba1bb2ca0723589f860fec5c87fbac0b15551ed330","href":"https://static.observableusercontent.com/files/672309433a04cf0a6fc24a7127a85f9d7350d6012453b3bc11f5d1580f9223341f8ad8d0a484b481b67283ba1bb2ca0723589f860fec5c87fbac0b15551ed330","name":"CistercianNumerals.jpeg","type":"image/jpeg","lastModified":1612482118497.652,"size":51894}] 2f:{"title":"Cistercian Numeral Notation","cells":[{"id":0,"value":"md`# Cistercian Numeral Notation`","pinned":false,"hidden":false,"mode":"ojs"},{"id":281,"value":"md`Inspired by this tweet:`","pinned":false,"hidden":false,"mode":"ojs"},{"id":284,"value":"FileAttachment(\"CistercianNumerals.jpeg\").image()","pinned":false,"hidden":false,"mode":"ojs"},{"id":278,"value":"html`

The Cistercian monks invented a numbering system in the 13th century which meant that any number from 1 to 9999 could be written using a single symbol pic.twitter.com/VRuEx4dkPF
— UCL Department of Mathematics (@MathematicsUCL) February 2, 2021

`","pinned":false,"hidden":false,"mode":"ojs"},{"id":287,"value":"md`---`","pinned":false,"hidden":false,"mode":"ojs"},{"id":10,"value":"viewof n = Range([0, 9999], {\n label: \"Number\",\n step: 1,\n value: 1993\n})","pinned":false,"hidden":false,"mode":"ojs"},{"id":361,"value":"plot_numeral(n)","pinned":true,"hidden":false,"mode":"ojs"},{"id":360,"value":"md`---`","pinned":false,"hidden":false,"mode":"ojs"},{"id":292,"value":"md`## Settings`","pinned":false,"hidden":false,"mode":"ojs"},{"id":314,"value":"viewof size = Range([0, 200], {step: 1, value: 60, label: \"Glyph size\"})","pinned":false,"hidden":false,"mode":"ojs"},{"id":44,"value":"viewof lineWeight = Range([0, 20], {step: 1, value: 10, label: \"Line weight\"})","pinned":false,"hidden":false,"mode":"ojs"},{"id":320,"value":"viewof spacing = Range([0, 200], {step: 1, value: 60, label: \"Glyph spacing\"})","pinned":false,"hidden":false,"mode":"ojs"},{"id":340,"value":"md`---`","pinned":false,"hidden":false,"mode":"ojs"},{"id":43,"value":"plot_numeral = (number) => svg`\n`","pinned":true,"hidden":false,"mode":"ojs"},{"id":14,"value":"// Zero-pads the input number to a fixed four digits\ndigits = number => Array.from((\"0000\" + number.toFixed()).slice(-4), Number)","pinned":true,"hidden":false,"mode":"ojs"},{"id":351,"value":"transforms = [\n [-1, -1, bottom], // X000 -> bottom left\n [ 1, -1, bottom], // 0X00 -> bottom right\n [-1, 1, top], // 00X0 -> top left\n [ 1, 1, top] // 000X -> top right\n].map(([xs, ys, pos]) => `transform=\"translate(${pos}) scale(${xs},${ys})\"`)","pinned":true,"hidden":false,"mode":"ojs"},{"id":228,"value":"glyphs = {\n var nw = '0,0',\n ne = `${size},0`,\n sw = `0,${size}`,\n se = `${size},${size}`;\n return [\n [nw], // 0 (no line)\n [nw, ne], // 1\n [sw, se], // 2\n [nw, se], // 3\n [ne, sw], // 4\n [nw, ne, sw], // 5\n [ne, se], // 6\n [nw, ne, se], // 7\n [ne, se, sw], // 8\n [nw, ne, se, sw] // 9\n ].map(corners => `d=\"M${corners.join('L')}\"`);\n}","pinned":true,"hidden":false,"mode":"ojs"},{"id":347,"value":"top = `0,0`","pinned":true,"hidden":false,"mode":"ojs"},{"id":346,"value":"bottom = `0,${2 * size + spacing}`","pinned":true,"hidden":false,"mode":"ojs"},{"id":345,"value":"linestyle = `stroke-linecap=round stroke-linejoin=round stroke=black stroke-width=${lineWeight} fill=none`","pinned":false,"hidden":false,"mode":"ojs"},{"id":337,"value":"md`---`","pinned":false,"hidden":false,"mode":"ojs"},{"id":7,"value":"import {Range} from \"@observablehq/inputs\"","pinned":false,"hidden":false,"mode":"ojs"}],"files":"$W31","stdlib":"1","titling":"auto"}