36:["$","title",null,{"children":"MD Zip Total Cases Map | Adam Chazan | Observable"}] 3e:Tc45,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_Zip_Codes)) 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 per 100,000", width: 300 })); g.append("g") .attr("cursor", "pointer") .attr("stroke", "grey") .attr("fill", "white") .attr("stroke-width", 0.75) .selectAll("path") .data(topojson.feature(maryland, maryland.objects.Maryland_Zip_Codes).features) .join("path") .attr("fill", d => color(mdcaseszip.get(d.properties.ZIP_CODE))) .on("click", clicked) .attr("d", path) .on('mouseover', function (d) { this.classList.add('hovered') d3.select(this) .attr("stroke", "black") .attr("stroke-width", 3) .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 - 140) + 'px') .style('left', (mouseX + 155 <= root.node().offsetWidth ? 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\n \n ${d.properties.NAME} \n
${d.properties.ZIP_CODE} \n \n

Cases per 100,000:
${d3.format(\",.0f\")(mdcaseszip.get(d.properties.ZIP_CODE))}

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