372 lines
15 KiB
HTML
372 lines
15 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>Covid19 interactive map</title>
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<meta charset="utf-8"/>
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<!-- Social media -->
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<meta name="twitter:card" content="summary_large_image" />
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<meta name="twitter:title" content="Covid-19 interactive map" />
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<meta name="twitter:image" content="https://vane.github.io/covid-disease-spread/card.png" />
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<meta name="twitter:creator" content="@szczepano">
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<link rel="canonical" href="https://vane.github.io/covid-disease-spread/" />
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<meta property="og:title" content="Covid19 interactive map" />
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<meta property="og:description" content="Covid19 interactive map" />
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<meta property="og:url" content="https://vane.github.io/covid-disease-spread/" />
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<meta property="og:site_name" content="Covid19 interactive map" />
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<meta property="og:image" content="https://vane.github.io/covid-disease-spread/card.png" />
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<meta property="og:image:height" content="848" />
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<meta property="og:image:width" content="2186" />
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<meta property="og:type" content="article" />
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<meta property="article:published_time" content="2020-04-05T22:59:14" />
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<script type="application/ld+json">
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{"mainEntityOfPage":{"@type":"WebPage","@id":"https://vane.github.io/covid-disease-spread/"},"url":"https://vane.github.io/covid-disease-spread/","image":{"width":2186,"height":848,"url":"https://vane.github.io/covid-disease-spread/card.png","@type":"imageObject"},"author":{"@type":"Person","name":"Michal Szczepanski"},"headline":"Covid 19 interactive map","dateModified":"2020-04-05T22:59:14","description":"Covid19 interactive map","datePublished":"2020-04-05T22:59:14","@type":"BlogPosting","@context":"https://schema.org"}</script>
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<!-- end -->
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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/leaflet/0.7.1/leaflet.css"/>
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<style type="text/css">
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.leaflet-container {
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background-color: #c5e8ff;
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}
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table {
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border-collapse: collapse;
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width: 100%;
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}
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th, td {
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border-bottom: 1px solid #ddd;
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text-align: center;
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}
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</style>
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</head>
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<body>
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<div style="display:flex;">
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<div>
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<div id="map" style="width: 534px; height: 350px"></div>
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<div>
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<span><a target="_blank" href="https://www.ecdc.europa.eu/en/publications-data/download-todays-data-geographic-distribution-covid-19-cases-worldwide">Data source - ecdc.europa.eu</a></span>
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<br/>
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<span><a target="_blank" href="https://geojson-maps.ash.ms/">Map geojson source - geojson-maps.ash.ms</a></span>
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<br />
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<span><a target="_blank" href="https://github.com/vane/covid-disease-spread">Github repository</a></span>
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<br />
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<label>Data updated daily at 2pm UTC+0</label>
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</div>
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</div>
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<div style="padding-left:10px;">
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<label id="rollover_data" style="color:blue;"></label>
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<br />
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<label>Autoplay <input id="autoplay_checkbox" type="checkbox" checked></label>
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<br />
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<label>Date <span id="date_range_current">2019-12-31</span>
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<input id="date_range" style="width:400px;" type="range" step="1" min="0" max="0"></label>
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<br />
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<div id="coronacases" style="max-height:280px;overflow:auto;padding-top:10px;"></div>
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</div>
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</div>
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<script src="https://code.jquery.com/jquery-1.10.2.min.js"></script>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet/0.7.1/leaflet.js"></script>
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<script>
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// helper
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const gid = (id) => {
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return document.getElementById(id);
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}
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const formatNumber = (x, sep) => {
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return x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, sep);
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}
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// maps
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const mapPath = 'data/110m.geo.json'
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const mapStyle = {
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stroke: true,
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weight: 1,
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fill: true,
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fillColor: '#fff',
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fillOpacity: 1
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}
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const countryLayer = {};
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let covidDataCache = {};
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// gradient
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const colors = {
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start: [255, 255, 255],
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end: [255, 0, 0],
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gradients: [],
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gradientsCol: [],
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range: 50,
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autoplaySpeed: 250,
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}
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// https://stackoverflow.com/questions/24016456/how-to-programmatically-create-n-sequential-equidistant-colors-ranging-from-dark
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const linearGradient = (n) => {
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const gradients = [];
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const gradientsCol = [];
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const dRGB = [];
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for (let i = 0;i<colors.start.length;i++) {
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const color1 = colors.start[i];
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const color2 = colors.end[i];
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const c = (color2 - color1)/((n/2) - 1);
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dRGB.push(c);
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}
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for (let k = 0;k<n;k++) {
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const col = [];
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for(let j = 0;j<colors.start.length;j++) {
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const dx = dRGB[j];
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const color1 = colors.start[j];
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const c = parseInt(color1+k*dx);
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col.push(c);
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}
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gradientsCol.push('rgb('+col.join(',')+')');
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gradients.push(col);
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}
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colors.gradients = gradients;
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colors.gradientsCol = gradientsCol;
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}
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linearGradient(colors.range+1);
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$.getJSON(mapPath, (data) => {
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let map = L.map('map').setView([45, 0], 1.05);
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L.geoJson(data, {
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clickable: true,
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style: mapStyle,
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//interactive: false,
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onEachFeature: (feature, layer) => {
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let toCCode = (c) => {
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if(feature.properties.iso_a2 == "GB") {
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return "UK"
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}
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return c;
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}
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let ccode = toCCode(feature.properties.iso_a2);
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const prevColor = {
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set: false,
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col: '',
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};
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countryLayer[ccode] = layer;
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layer.on('mouseover', (e) => {
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const props = e.target.feature.properties;
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const ccode = toCCode(props.iso_a2);
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const covid = covidDataCache.country[ccode];
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if(data && covidDataCache) {
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const cont = gid('rollover_data');
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cont.innerText = `${props.sovereignt} - Total : ${formatNumber(covid.ctotal, " ")} Deaths : ${formatNumber(covid.dtotal, " ")} Population : ${formatNumber(props.pop_est, " ")}`;
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}
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})
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layer.on('mouseout', (e) => {
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const cont = gid('rollover_data');
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cont.innerText = '';
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})
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},
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}).addTo(map);
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}).then(() => {
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console.log('finish drawing countries');
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$.get('data/download.csv').then((data) => {
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const covidData = {}
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const today = new Date();
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covidData.country = {};
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covidData.end = {day: today.getDate(), month: today.getMonth(), year: today.getFullYear()}
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covidData.start = {country: 'CN', day: 31, month: 12, year: 2019}
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data.split('\n').forEach((row, i) => {
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if (i > 1) {
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const a = row.split(',')
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const date = a[0]
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const day = a[1]
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const month = a[2]
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const year = a[3]
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const cases = parseInt(a[4])
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const deaths = parseInt(a[5])
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const geoId = a[7]
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const population = parseInt(a[9])
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if (!covidData.country[geoId]) {
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covidData.country[geoId] = {data: {}, population: population, ctotal: 0, dtotal: 0}
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}
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covidData.country[geoId].data[year+"-"+month+"-"+day] = {cases: cases, deaths: deaths, cgrow:0, dgrow:0}
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}
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});
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return covidData;
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}).then((covidData) => {
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// country disease calculate
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const start = covidData.start;
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// end date
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const end = new Date(covidData.end.year, covidData.end.month, covidData.end.day + 1);
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const countries = covidData.country;
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let dateFormat, ccode, country, stats;
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covidData.totalDays = 0;
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covidData.maxCasesCountry = '';
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covidData.maxCases = 0;
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covidData.maxDeathsCountry = '';
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covidData.maxDeaths = 0;
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// let's fill gaps
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const countryCache = {};
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// https://stackoverflow.com/questions/4345045/javascript-loop-between-date-ranges
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// iterate over dates
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for(let s = new Date(start.year, start.month - 1, start.day);s < end;s.setDate(s.getDate() + 1)) {
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dateFormat = s.getFullYear()+"-"+(s.getMonth() + 1)+"-"+s.getDate();
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// console.log(dateFormat)
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// iterate over countries
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for(ccode in countries) {
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country = countries[ccode];
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// precalculate stats
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if(country.data[dateFormat]) {
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stats = country.data[dateFormat];
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country.ctotal += stats.cases;
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country.dtotal += stats.deaths;
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if(country.dtotal > covidData.maxDeaths) {
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covidData.maxDeaths = country.dtotal;
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covidData.maxDeathsCountry = ccode;
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}
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if(country.ctotal > covidData.maxCases) {
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covidData.maxCases = country.ctotal;
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covidData.maxCasesCountry = ccode;
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}
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stats.cgrow = country.ctotal;
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stats.dgrow = country.dtotal;
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countryCache[ccode] = {
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cgrow: stats.cgrow,
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dgrow: stats.dgrow,
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cases: 0,
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deaths: 0,
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};
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} else {
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// let's fill gaps
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country.data[dateFormat] = countryCache[ccode]
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}
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}
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// let's have total days so we can use it in range control
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covidData.totalDays += 1;
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}
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gid('date_range').max = covidData.totalDays - 1;
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console.log('total days', covidData.totalDays);
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//console.log(colors.steps);
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return covidData;
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}).then((covidData) => {
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// initialize controls
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// console.log(covidData);
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covidDataCache = covidData;
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let calcTimeout = -1;
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let autoPlayIntervalId = 0;
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const coronacases = gid('coronacases');
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const autoplay = () => {
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let value = parseInt(gid('date_range').value);
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if (value >= covidData.totalDays - 1) {
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value = 0;
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}
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// console.log(value);
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gid('date_range').value = value + 1;
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colorCountries(value);
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};
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const colorCountries = (value) => {
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const dt = new Date(covidData.start.year, covidData.start.month - 1, covidData.start.day);
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dt.setDate(dt.getDate() + parseInt(value));
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const dformat = dt.getFullYear()+"-"+(dt.getMonth()+1)+"-"+dt.getDate();
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gid('date_range_current').innerText = dformat;
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const colorStep = covidData.maxCases / colors.range;
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const coronaCountries = [];
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// console.log('color step', colorStep);
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let layer, country, stats, colorIndex, props;
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for(let ccode in countryLayer) {
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layer = countryLayer[ccode];
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country = covidData.country[ccode];
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if(country) {
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stats = country.data[dformat];
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if(stats && stats.cgrow > 0) {
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colorIndex = colors.gradientsCol[Math.ceil(stats.cgrow / colorStep)];
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layer.setStyle({
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fillColor: colorIndex,
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});
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props = layer.feature.properties;
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// lets create list of countries here
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coronaCountries.push({
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'code': ccode,
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'cases': stats.cgrow,
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'name': props.name,
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'deaths':stats.dgrow,
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'dcases':stats.cases,
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'ddeaths':stats.deaths,
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});
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// console.log(ccode, stats, colorIndex);
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} else {
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layer.setStyle({
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fillColor: mapStyle.fillColor,
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});
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}
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//console.log(ccode, Math.floor(country.ctotal / colorStep));
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} else {
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layer.setStyle({
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fillColor: mapStyle.fillColor,
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});
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}
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}
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// now sort the countries and build the list control
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coronaCountries.sort((a, b) => {
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if(a.cases > b.cases) {
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return -1;
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} else if (a.cases < b.cases) {
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return 1;
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}
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return 0;
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});
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let coronaText = '<table><thead><th>Rank</th><th>Country</th><th>Total Cases</th><th>Total Deaths</th>';
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coronaText += '<th>Day Cases</th><th>Day Deaths</th></thead><tbody>';
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let cc = '';
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const tc = {
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cases: 0,
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deaths: 0,
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dcases: 0,
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ddeaths: 0,
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};
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coronaCountries.forEach((c, i) => {
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tc.cases += c.cases;
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tc.deaths += c.deaths;
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tc.dcases += c.dcases;
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tc.ddeaths += c.ddeaths;
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cc += `<tr>
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<td>${i+1}</td>
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<td><b>${c.name}</b></td>
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<td>${c.cases}</td>
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<td>${c.deaths}</td>
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<td>${c.dcases}</td>
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<td>${c.ddeaths}</td>
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</tr>`;
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})
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coronaText += `<tr>
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<td>0</td>
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<td><b>Total</b></td>
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<td>${tc.cases}</td>
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<td>${tc.deaths}</td>
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<td>${tc.dcases}</td>
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<td>${tc.ddeaths}</td>
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</tr>`;
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coronaText += cc;
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coronaText += '</tbody></table>';
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coronacases.innerHTML = coronaText;
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};
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const rangeValueChange = (e) => {
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clearTimeout(calcTimeout);
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clearInterval(autoPlayIntervalId);
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gid('autoplay_checkbox').checked = false;
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const value = e.target.value;
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calcTimeout = setTimeout(() => {
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colorCountries(value);
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}, 250);
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};
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const autoplayChange = () => {
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const checked = gid('autoplay_checkbox').checked;
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if(!checked) {
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clearInterval(autoPlayIntervalId);
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} else {
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autoPlayIntervalId = setInterval(autoplay, colors.autoplaySpeed);
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}
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// console.log(checked);
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}
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if(gid('autoplay_checkbox').checked) {
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autoPlayIntervalId = setInterval(autoplay, colors.autoplaySpeed);
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}
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// console.log(gid('date_range').max, gid('date_range').min, gid('date_range').value);
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gid('autoplay_checkbox').addEventListener('change', autoplayChange);
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gid('date_range').addEventListener('change', rangeValueChange);
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gid('date_range').addEventListener('input', rangeValueChange);
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return covidData;
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});
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})
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</script>
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</body>
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</html>
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