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script.js
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script.js
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d3.csv('wealth-health-2014.csv', d3.autoType).then(d=>{
console.log(d);
renderPlot(d);
});
function renderPlot(data) {
const margin = ({top: 20, right: 20, bottom: 21, left: 21})
const width = 650 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
const svg = d3.select(".chart").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
const xScale = d3
.scaleLog()
.domain(d3.extent(data, function(d) { return d.Income; }))
.range([0, width])
const yScale = d3
.scaleLog()
.domain(d3.extent(data, function(d) { return d.LifeExpectancy; }))
.range([height, 0])
const rScale = d3
.scaleLinear()
.domain(d3.extent(data, function(d) { return d.Population; }))
.range([6, 35])
const colorScale = d3
.scaleOrdinal()
.domain(new Set(data.map(d => d.Region)))
.range(d3.schemeTableau10)
const dots = svg.selectAll('.dot')
.data(data)
.enter()
.append('circle')
.attr('class', 'dot')
.attr('cx', d=>xScale(d.Income))
.attr('cy', d=> yScale(d.LifeExpectancy))
.attr('r', function (d){
return rScale(d.Population);
})
.attr('stroke', 'black')
.attr('fill', function(d) {
return colorScale(d.Region)
})
.attr('opacity', '75%')
.on("mouseenter", (event, d) => {
const pos = d3.pointer(event, window);
let tip = d3.select("#tooltip")
.style("left", pos[0] + "px")
.style("top", pos[1] + "px");
tip.select("#country")
.text(d.Country);
tip.select("#region")
.text("Region: " + d.Region);
tip.select("#population")
.text("Population: " + d.Population);
tip.select("#income")
.text("Income: " + d.Income);
tip.select("#life")
.text("Life Expectancy: " + d.LifeExpectancy);
// show the tooltip
d3.select("#tooltip").classed("hidden", false);
})
.on("mouseleave", (event, d) => {
// hide the tooltip
d3.select("#tooltip").classed("hidden", true);
});
const xAxScale = d3
.scaleLinear()
.domain(d3.extent(data, function(d) { return d.Income; }))
.range([0, width])
const yAxScale = d3
.scaleLinear()
.domain(d3.extent(data, function(d) { return d.LifeExpectancy; }))
.range([height, 0])
const xAxis = d3.axisBottom()
.scale(xAxScale)
.ticks(5, "s")
svg.append("g")
.attr("class", "axis x-axis")
.attr("transform", `translate(0, ${height})`)
.call(xAxis)
const yAxis = d3.axisLeft()
.scale(yAxScale)
svg.append("g")
.attr("class", "axis y-axis")
.call(yAxis);
svg.append("text")
.attr('x', width-55)
.attr('y', height-10)
.text("Income")
svg.append("text")
.attr('x', 16)
.attr('y', 0)
.attr('writing-mode', 'vertical-lr')
.text("Life Expectancy")
const legend = svg.selectAll('.key')
.data(new Set(data.map(d => d.Region)))
.enter()
.append('rect')
.attr('class', 'key')
.attr('width', '20px')
.attr('height', '20px')
.attr('x', width-150)
.attr('y', function (d, i){
return i*30 + 250;
})
.attr('fill', function (d, i){
return colorScale(d);
})
const labels = svg.selectAll('.label')
.data(new Set(data.map(d => d.Region)))
.enter()
.append('text')
.attr('class', 'label')
.attr('x', width-120)
.attr('y', function (d, i){
return i*30 + 265;
})
.text( function (d) {
return d;
})
.attr('font-size', '12px')
}