Data Visualization Developer at The Associated Press
Public
Edited
Apr 14, 2023
2 stars
function transform(d) {
const [x, y] = path.centroid(d)
return `
translate(${x},${y})
scale(${size(pop.find(x => x.state === d.name)?.pop_2022 )})
translate(${-x},${-y})
`;
}
size = d3.scaleSqrt()
.domain([0, d3.max(pop, d => d.pop_2022)])
.range([0, 1.2])
simulation = d3.forceSimulation(states)
.force("x", d3.forceX(d=> path.centroid(d)[0]).strength(2))
.force("y", d3.forceY(d => path.centroid(d)[1]).strength(2))
.force("charge", d3.forceManyBody().strength(1000))
.force("collide", d3.forceCollide(d => 1 + sizeScale(pop.find(x => x.state === d.name)?.pop_2022) ))
.stop();
sizeScale = d3.scaleSqrt()
.domain([0, d3.max(pop, d => d.pop_2022)])
.range([0, Math.sqrt(width * height) / 10])
demers = {
for (let i = 0; i < 300; i++){
squareSimulation.tick();
}
const svg = d3.create('svg').attr("width", width).attr("height", height)
.attr("stroke-linejoin", "round")
.attr("stroke-linecap", "round");
// center the squares with the translate function
const node = svg.selectAll('square')
.data(states)
.join('rect')
.attr('width', d => sizeSquare(d) )
.attr('height', d => sizeSquare(d) )
.attr('x', d => d.x )
.attr('y', d => d.y )
.attr('stroke', '#FFF')
.attr('transform', d => `translate(${-(sizeSquare(d) / 2)},${-(sizeSquare(d) / 2)})`)
svg.selectAll('label')
.data(states)
.join('text')
.attr('fill', '#FFF')
.attr('x', d => d.x )
.attr('y', d => d.y )
.attr('text-anchor', 'middle')
.text(d => formatText(d) )
return svg.node()
}
sizeSquare = {
const sizeScale = d3.scaleSqrt()
.domain([0, d3.max(pop, d => d.pop_2022)])
.range([0, Math.sqrt(width * height) / 5])
return (d) => sizeScale(pop.find(x => x.state === d.name)?.pop_2022)
}
squareSimulation = {
const circumscribe = (sideLength) => Math.round((Math.sqrt(2) * sideLength) / 2, 2)
return d3.forceSimulation(states)
.force("x", d3.forceX(d=> path.centroid(d)[0]))
.force("y", d3.forceY(d => path.centroid(d)[1]))
.force("charge", d3.forceManyBody().strength(100))
.force("collide", d3.forceCollide(d => circumscribe(sizeSquare(d)) ) )
.stop() }
formatText = (d) => d.name?.slice(0, 1) + d.name?.slice(d.name.length - 1).toUpperCase()
projection = d3.geoAlbersUsa()
pop = {
const data = await FileAttachment("us_population@3.csv").csv()
return data.map(d => ({state: d.state, pop_2022: +d.pop_2022, pop_2020: +d.pop_2020}))
}
us_unproj = await FileAttachment("us.json").json()
states = {
const outlines = topojson.feature(us_unproj, us_unproj.objects.states).features
return outlines.map(d => ({...d, name: stateNames.find(x => +x.id == d.id )?.properties?.name }))
}
height = 600
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