36:["$","title",null,{"children":"MD Counties Total Cases Map | Prayag Gordy | Observable"}] 3e:Tbd0,chart = { const width = 975; const height = 550; const zoom = d3.zoom() .scaleExtent([1, 4]) .on("zoom", zoomed); const root = d3.create("div") .attr("class", "root"); const svg = root.append("svg") .attr("viewBox", [0, -20, width, height]) .on("click", reset); const g = svg.append("g"); const projection = d3.geoAlbersUsa() .fitSize([width, height], topojson.feature(maryland, maryland.objects.Maryland_Counties)) const tooltip = root .append("div") .attr("class", "cooltip"); const path = d3.geoPath() .projection(projection); svg.append("g") .attr("transform", "translate(20,35)") .append(() => legend({ color: d3.scaleSequential([extent[0], extent[1]], d3.interpolateOranges), title: "Total Cases", width: 300 })); g.append("g") .attr("cursor", "pointer") .attr("stroke", "grey") .attr("stroke-width", 0.75) .selectAll("path") .data(topojson.feature(maryland, maryland.objects.Maryland_Counties).features) .join("path") .attr("fill", d => color(mdcases.get(d.properties.FIPS))) .on("click", clicked) .attr("d", path) .on('mouseover', function (d) { this.classList.add('hovered') d3.select(this) .attr("stroke", "black") .raise() tooltip.style('display', ''); let node = tooltip.node(); node.innerHTML = ""; node.appendChild(getTooltipContents(d)); }) .on('mousemove', function () { const rootBounds = root.node().getBoundingClientRect(); const mouseX = d3.event.pageX - rootBounds.left; const mouseY = d3.event.pageY - rootBounds.top; tooltip .style('top', Math.min((mouseY - 10), root.node().offsetHeight - 135) + 'px') .style('left', (mouseX + 145 <= root.node().offsetWidth ? (mouseX + 10) : (mouseX - 135)) + 'px') .style('display', 'block') }) .on('mouseout', function () { this.classList.remove('hovered') d3.select(this) .attr("stroke", null) .lower() tooltip.style('display', 'none') }); svg.call(zoom); function reset() { svg.transition().duration(750).call( zoom.transform, d3.zoomIdentity, d3.zoomTransform(svg.node()).invert([width / 2, height / 2]) ); } function clicked(d) { const [[x0, y0], [x1, y1]] = path.bounds(d); d3.event.stopPropagation(); svg.transition().duration(750).call( zoom.transform, d3.zoomIdentity .translate(width / 2, height / 2) .scale(Math.min(3, 0.9 / Math.max((x1 - x0) / width, (y1 - y0) / height))) .translate(-(x0 + x1) / 2, -(y0 + y1) / 2), d3.mouse(svg.node()) ); } function zoomed() { const {transform} = d3.event; g.attr("transform", transform); g.attr("stroke-width", 1 / transform.k); } window.addEventListener("resize", () => resized(width, root, svg)); setTimeout(() => resized(width, root, svg), 12); return root.node(); }3f:[{"id":"f7de3e03c7ca9d63759c468d5fe1ce3b17d0277ac97be3698d4ac30a9eb3f63f0a9bed5a35fc93c9451ad82a8bacea08e56561122ce2f4b590f41359dc9db5ba","href":"https://static.observableusercontent.com/files/f7de3e03c7ca9d63759c468d5fe1ce3b17d0277ac97be3698d4ac30a9eb3f63f0a9bed5a35fc93c9451ad82a8bacea08e56561122ce2f4b590f41359dc9db5ba","name":"mdcounties@2.json","type":"application/json","lastModified":1597424234624.382,"size":56581}] 3a:{"id":"49363a1f542c9fa8","slug":"md-counties-total-cases-map/2","title":"MD Counties Total Cases Map","thumbnail":"a37bb770e16471f05085f1ea8a8e5633431908613ecfab1e9768a144301d8409","access_level":"public","create_time":"$D2020-08-14T16:57:14.624Z","update_time":"$D2020-08-14T16:58:59.040Z","view_time":null,"first_public_time":"$D2020-08-14T16:59:04.316Z","has_unpublished_edits":null,"fork":{"id":"26c60eb5a766bfac","slug":"coronavirus-dashboard","title":"MD Counties Total Cases Map","owner":{"id":"66b1fb28757b26dc","login":"adamchzn","name":"Adam Chazan"}},"stars":0,"starred":false,"owner":{"type":"team","id":"8dd6422bb0578a38","login":"prayaggordy","name":"Prayag Gordy","avatar_url":"https://avatars-next.observableusercontent.com/cc95f338a0f78c78d1a9090c5e94c5eba102ed6a0d6b2743f31ff43298c3e044","tier":"starter_2024","bio":"Rice University '24. Data, journalism, politics.","following":false},"version":843,"publish_version":843,"role":null,"authored":false,"authors":[{"type":"individual","id":"2cb1883273e762ce","login":"prayaggordy","name":"Prayag Gordy","avatar_url":"https://avatars-next.observableusercontent.com/cc95f338a0f78c78d1a9090c5e94c5eba102ed6a0d6b2743f31ff43298c3e044","tier":null,"bio":"Rice University '24. Data, journalism, politics.","following":false}],"members":[{"type":"individual","id":"2cb1883273e762ce","login":"prayaggordy","name":"Prayag Gordy","avatar_url":"https://avatars-next.observableusercontent.com/cc95f338a0f78c78d1a9090c5e94c5eba102ed6a0d6b2743f31ff43298c3e044","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":0,"collection":null,"type":"notebook","body":{"titling":"auto","title":"MD Counties Total Cases Map","cells":[{"id":0,"value":"md`# MD Counties Total Cases Map`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":83,"value":"$3e","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":815,"value":"function resized(width, root, svg) {\n let measuredWidth = root.node().getBoundingClientRect().width;\n if (measuredWidth == 0) {\n setTimeout(() => resized(width, root, svg), 12);\n return;\n }\n let scale = width / measuredWidth;\n svg.selectAll(\"line\").attr(\"stroke-width\", scale + \"px\");\n svg.selectAll(\"text\").attr(\"transform\", \"scale(\" + scale + \" \" + scale + \")\");\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":264,"value":"getTooltipContents = d => {\n function getlowestfraction(x0) {\n var eps = 0.01;\n var h, h1, h2, k, k1, k2, a, x;\n\n x = x0;\n a = Math.floor(x);\n h1 = 1;\n k1 = 0;\n h = a;\n k = 1;\n\n while (x - a > eps * k * k) {\n x = 1 / (x - a);\n a = Math.floor(x);\n h2 = h1;\n h1 = h;\n k2 = k1;\n k1 = k;\n h = h2 + a * h1;\n k = k2 + a * k1;\n }\n\n return h + \" in \" + k + \" residents\";\n }\n\n return html`

\n \n

${d.properties.NAME}

\n \n

Total cases: ${mdcases.get(\n d.properties.FIPS\n )}

${getlowestfraction(\n mdcases.get(d.properties.FIPS) / mdpop.get(d.properties.FIPS)\n )} \n

`;\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":247,"value":"html` \n\n`","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":217,"value":"color = v => scale((Math.sqrt(v)*150))","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":502,"value":"scale = d3.scaleSequential(d3.interpolateOranges).domain(extent)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":204,"value":"log = l => Math.log(l+1)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":207,"value":"extent = d3.extent(Array.from(mdcases.values()))","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":6,"value":"maryland = FileAttachment(\"mdcounties@2.json\").json()","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":317,"value":"caseTrend = Object.assign(await d3.csv(\"https://raw.githubusercontent.com/prayaggordy/D3-covid-map/master/data/md_counties_cases.csv?token=APZJICOZRHLILJIZFAT5B6C7DDEWM\", d3.autoType)).map(({date, fips, new_cases}) => ({date, fips, new_cases: +new_cases}))","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":121,"value":"mdcases = Object.assign(new Map(await d3.csv(\"https://raw.githubusercontent.com/prayaggordy/D3-covid-map/master/data/md_counties_today.csv\", ({fips, cases}) => [fips, +cases])), {title: \"Maryland Cases\"})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":840,"value":"mdpop = Object.assign(\n new Map(\n await d3.csv(\n \"https://raw.githubusercontent.com/prayaggordy/D3-covid-map/master/population/county.csv\",\n ({ fips, population }) => [fips, +population]\n )\n ),\n { title: \"Maryland Population\" }\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":16,"value":"projection = d3.geoAlbersUsa().scale(1300).translate([487.5, 305])","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":12,"value":"path = d3.geoPath()","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":7,"value":"topojson = require(\"topojson-client@3\")","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":10,"value":"d3 = require(\"d3@5\")","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":785,"value":"import {legend} from \"@d3/color-legend\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W3f","stdlib":"1"}} 35:null