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Data: [worldometer](https://www.worldometers.info/coronavirus/)`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":982,"value":"viewof keyframe = Scrubber(keyframes, {\n format: ([date]) => formatDate(date),\n delay: duration,\n loop: false\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":3121,"value":"swatches({\n color: d3.scaleOrdinal([\"Asia\", \"Europe\", \"Africa\", \"North America\", \"South America\", \"Oceania\", \"Diamond Princess\"], d3.schemeSet1),\n columns: \"180px\"\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":0,"value":"chart = {\n const svg = d3.create(\"svg\")\n .attr(\"viewBox\", [0, 0, width, height]);\n\n const updateBars = bars(svg);\n const updateAxis = axis(svg);\n const updateLabels = labels(svg);\n const updateTicker = ticker(svg);\n\n invalidation.then(() => svg.interrupt());\n\n return Object.assign(svg.node(), {\n update(keyframe) {\n const transition = svg.transition()\n .duration(duration)\n .ease(d3.easeLinear);\n\n // Extract the top bar’s value.\n x.domain([0, keyframe[1][0].value]);\n\n updateAxis(keyframe, transition);\n updateBars(keyframe, transition);\n updateLabels(keyframe, transition);\n updateTicker(keyframe, transition);\n }\n });\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":3049,"value":"chart.update(keyframe)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":3241,"value":"md `## Code below:`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":144,"value":"data = d3.csvParse(await FileAttachment(\"covid-4 – 8wr@3.csv\").text(), d3.autoType)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":408,"value":"duration = 50","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":411,"value":"n = 20","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2135,"value":"names = new Set(data.map(d => d.name))","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":880,"value":"datevalues = Array.from(d3.rollup(data, ([d]) => d.value, d => +d.date, d => d.name))\n .map(([date, data]) => [new Date(date), data])\n .sort(([a], [b]) => d3.ascending(a, b))","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":862,"value":"function rank(value) {\n const data = Array.from(names, name => ({name, value: value(name)}));\n data.sort((a, b) => d3.descending(a.value, b.value));\n for (let i = 0; i < data.length; ++i) data[i].rank = Math.min(n, i);\n return data;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":830,"value":"k = 10","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":757,"value":"keyframes = {\n const keyframes = [];\n let ka, a, kb, b;\n for ([[ka, a], [kb, b]] of d3.pairs(datevalues)) {\n for (let i = 0; i < k; ++i) {\n const t = i / k;\n keyframes.push([\n new Date(ka * (1 - 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