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27 lines
773 B
JavaScript
27 lines
773 B
JavaScript
// SARS-CoV-2-Viz
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// Animated COVID case count visualization
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// Copyright 2022 Edward L. Platt <ed@elplatt.com>
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function createChoropleth(us, msPerFrame, domain) {
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const counties = topojson.feature(us, us.objects.counties);
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const states = topojson.feature(us, us.objects.states)
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const statemesh = topojson.mesh(
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us, us.objects.states, (a, b) => a !== b)
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const statemap = new Map(states.features.map(d => [d.id, d]));
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let chart = Choropleth({
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id: d => d.FIPS,
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value: d => d.sevenDayMeanPer100KCap,
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domain: domain,
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title: (f, d) => `${f.properties.name}, ${statemap.get(f.id.slice(0, 2)).properties.name}\n${d?.sevenDayMean}`,
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features: counties,
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borders: statemesh,
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width: 975,
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height: 610,
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duration: msPerFrame
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});
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return chart;
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}
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