Data Visualization Developer at The Associated Press
{
const width = 900
const height = 600
const padding = 25
const svg = d3.create('svg')
.attr('width', width)
.attr('height', height)
svg.append("rect")
.attr("width", "100%")
.attr("height", "100%")
.attr("fill", "#121212");
async function fetchPlanets() {
let planets = []
for(let i = 1; i <= 6; i++) {
const response = await fetch(`https://swapi.dev/api/planets/?page=${i}`)
const data = await response.json()
data.results.forEach(obj => {
obj.gravity = +obj.gravity.split(" ", 1)[0]
obj.population = +obj.population
})
const filteredData = data.results.filter(d => d.diameter !== 'unknown')
planets.push(...filteredData)
}
return planets
}
const planets = await fetchPlanets()
const climates = ['temperate', 'tropical', 'frozen', 'frigid', 'arid', 'murky', 'polluted', 'hot', 'superheated']
const xScale = d3.scaleLog()
.domain([d3.min(planets, d => d.population) + 1, d3.max(planets, d => d.population) + 1])
.range([padding, width - padding])
const yScale = d3.scaleLinear()
.domain([d3.min(planets, d => d.gravity), d3.max(planets, d => d.gravity)])
.range([padding, height - padding])
//axes
const xAxis = d3.axisBottom(xScale)
const yAxis = d3.axisLeft(yScale).ticks(5)
const color = d3.scaleOrdinal()
.domain(climates)
.range(['#90BE6D', '#43AA8B', '#277DA1', '#4D908E', '#F9C74F', '#F5F5F5', '#577590', '#F3722C', '#F94144'])
const size = d3.scaleLinear()
.domain([0, d3.max(planets, d => d.diameter)])
.range([0, 10])
var circles = svg.selectAll()
.data(planets)
.enter()
.append('circle')
.attr('r', d => size(d.diameter / 2))
.attr('cx', d => d.population ? xScale(d.population) : padding)
.attr('cy', d => d.gravity ? yScale(d.gravity): padding)
.attr('fill', d => climates.includes(d.climate) ? color(d.climate) : 'lightgrey')
/*
var text = svg.selectAll()
.data(planets)
.enter()
.append('text')
.attr('x', d => d.population? xScale(d.population) : padding)
.attr('y', d => d.gravity ? yScale(d.gravity) : padding)
.attr('font-family', 'Proxima')
.attr('font-size', '10px')
.text(d => d.name)
*/
svg.append("g")
.call(xAxis)
.attr('transform', 'translate(0,' + height / 2+ ')')
.attr('stroke-width', .5)
.attr('stroke-dasharray', '3 3')
.attr('color', '#F5F5F5')
svg.append("g")
.call(yAxis)
.attr('transform', 'translate(' + width /2 + ',0)')
.attr('stroke-width', 0)
.attr('color', '#F5F5F5')
return svg.node()
}
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