Public
Edited
Feb 2, 2023
1 star
chart = {
// The D3 example I looked at is set up for 975x610 viewbox, not
// sure how to change that.
const svg = d3.create("svg").attr("viewBox", [0, 0, 975, 610]);
function moveTooltip(event, d) {
let [x, y] = path.centroid(d);
console.log(x, width);
if (x > 700) {
x -= 200;
y -= 15;
} else {
x += 20;
y -= 15;
}
tooltip.attr("transform", `translate(${x}, ${y})`);
}
svg
.selectAll(".county")
.data(counties.features)
.join("path")
.attr("class", "county")
.style("stroke", "#ccc")
.style("fill", (d) => color(lookup[d.id]))
.attr("d", (d) => path(d))
.on("mouseover", (event, d) => {
tooltip.style("visibility", "visible");
moveTooltip(event, d);
const pct = (lookup[d.id] * 100).toFixed(1);
tooltipText.text(`${d.properties.name}: ${pct}%`);
})
.on("mousemove", (event, d) => {
moveTooltip(event, d);
})
.on("mouseout", () => tooltip.style("visibility", "hidden"));
svg
.selectAll(".state")
.data(states.features)
.join("path")
.attr("class", "state")
.style("stroke", "black")
.style("fill", "none")
.attr("d", (d) => path(d));
const tooltip = svg.append("g");
const tooltipRect = tooltip
.append("rect")
.style("stroke", "black")
.style("fill", "rgba(0, 0, 0, 0.5)")
.attr("pointer-events", "none")
.attr("rx", 10)
.attr("width", 180)
.attr("height", 30);
const tooltipText = tooltip
.append("text")
.style("fill", "white")
.style("font-family", "Arial")
.style("font-weight", "bold")
.style("font-size", "12pt")
.attr("x", 10)
.attr("y", 21);
return svg.node();
}
height = 400
data = d3.tsv(vega["unemployment.tsv"].url, (d) => ({
fips_id: d.id.padStart(5, "0"),
rate: +d.rate
}))
lookup = {
const lookup = {};
for (let { fips_id, rate } of data) {
lookup[fips_id] = rate;
}
return lookup;
}
map = FileAttachment("counties-albers-10m.json").json()
states = topojson.feature(map, map.objects.states)
counties = topojson.feature(map, map.objects.counties)
path = d3.geoPath()
color = d3
.scaleQuantile(d3.schemeGreens[5])
.domain(d3.extent(data, (d) => d.rate))
vega = require("vega-datasets@2")
topojson = require("topojson-client@3")
import { Legend } from "@d3/color-legend"
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