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<!DOCTYPE html> |
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<html> |
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<head> |
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<meta charset="utf-8"> |
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<meta name="viewport" content="width=device-width"> |
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<script src="https://d3js.org/d3.v4.min.js"></script> |
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<script src="https://d3js.org/d3-selection-multi.v0.4.min.js"></script> |
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<script src="https://cdnjs.cloudflare.com/ajax/libs/d3-legend/2.24.0/d3-legend.min.js"></script> |
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<title>Internet user change by region</title> |
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<style> |
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body { |
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margin: 0px; |
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} |
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.domain { |
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display: none; |
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} |
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.tick line { |
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stroke: #C0C0BB; |
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} |
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.tick text, .legendCells text { |
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fill: #8E8883; |
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font-size: 10pt; |
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font-family: sans-serif; |
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} |
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.axis-label, .legend-label { |
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fill: #635F5D; |
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font-size: 20pt; |
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font-family: sans-serif; |
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} |
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</style> |
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</head> |
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<body> |
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<svg width="960" height="500"></svg> |
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<script> |
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const xValue = d => d['Year']; |
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const xLabel = 'Year'; |
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const yValue = d => d['Internet Users by World Region']; |
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const yLabel = 'Internet Users (millions)'; |
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const colorValue = d => d['Entity']; |
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const colorLabel = 'Countries'; |
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const margin = { left: 120, right: 300, top: 20, bottom: 120 }; |
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const svg = d3.select('svg'); |
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const width = svg.attr('width'); |
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const height = svg.attr('height'); |
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const innerWidth = width - margin.left - margin.right; |
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const innerHeight = height - margin.top - margin.bottom; |
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var radius = 5; |
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const g = svg.append('g') |
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.attr('transform', `translate(${margin.left},${margin.top})`); |
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const xAxisG = g.append('g') |
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.attr('transform', `translate(0, ${innerHeight})`); |
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const yAxisG = g.append('g'); |
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const colorLegendG = g.append('g') |
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.attr('transform', `translate(${innerWidth + 60}, 150)`); |
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xAxisG.append('text') |
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.attr('class', 'axis-label') |
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.attr('x', innerWidth / 2) |
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.attr('y', 60) |
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.text(xLabel); |
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yAxisG.append('text') |
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.attr('class', 'axis-label') |
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.attr('x', -innerHeight / 2) |
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.attr('y', -60) |
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.attr('transform', `rotate(-90)`) |
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.style('text-anchor', 'middle') |
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.text(yLabel); |
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colorLegendG.append('text') |
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.attr('class', 'legend-label') |
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.attr('x', -30) |
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.attr('y', -40) |
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.text(colorLabel); |
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const xScale = d3.scaleLinear(); |
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const yScale = d3.scaleLinear(); |
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const colorScale = d3.scaleOrdinal() |
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.range(d3.schemeCategory10); |
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const xAxis = d3.axisBottom() |
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.scale(xScale) |
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.tickPadding(15) |
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.tickSize(-innerHeight) |
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.tickFormat(d3.format("d")); |
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const yAxis = d3.axisLeft() |
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.scale(yScale) |
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.ticks(8) |
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.tickPadding(15) |
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.tickSize(-innerWidth) |
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.tickFormat(d3.format("d")); |
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const colorLegend = d3.legendColor() |
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.scale(colorScale) |
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.shape('circle') |
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const row = d => { |
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d['Year'] = +d['Year']; |
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d['Internet Users by World Region'] = +d['Internet Users by World Region']/1000000; |
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return d; |
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}; |
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d3.csv('internet-users-by-world-region.csv', row, data => { |
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xScale |
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.domain(d3.extent(data, xValue)) |
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.range([0, innerWidth]) |
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.nice(); |
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yScale |
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.domain(d3.extent(data, yValue)) |
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.range([innerHeight, 0]) |
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.nice(); |
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g.selectAll('circle').data(data) |
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.enter() |
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.append('circle') |
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.attr('cx', d => xScale(xValue(d))) |
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.attr('cy', d => yScale(yValue(d))) |
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.attr('fill', d => colorScale(colorValue(d))) |
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.attr('fill-opacity', 0.8) |
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.attr('r', radius) |
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.on("mouseover", handleMouseOver) |
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.on("mouseout",handleMouseOut); |
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xAxisG.call(xAxis); |
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yAxisG.call(yAxis); |
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colorLegendG.call(colorLegend) |
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.selectAll('.cell text') |
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.attr('dy', '0.1em'); |
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}); |
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function handleMouseOver(d, i){ |
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d3.select(this).attrs({ |
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r: radius * 2 |
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}); |
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// Specify where to put label of text |
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g.append("text").attrs({ |
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id: "id" + |
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d['Year'] + |
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"-" + |
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Math.round(d['Internet Users by World Region']) + |
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"-" + |
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i, |
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x: function() { return xScale(d['Year']) - 300; }, |
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y: function() { return yScale(d['Internet Users by World Region']) - 15; }, |
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fill: colorScale(colorValue(d)) |
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}) |
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.text(function() { |
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return ["(" + d['Entity'] + '; Year ' + d['Year'] + '; Users ' + Math.round(d['Internet Users by World Region']) + " millions)"]; |
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}); |
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} |
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function handleMouseOut(d, i) { |
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d3.select(this).attrs({ |
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r: radius |
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}); |
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d3.select("#id" + |
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d['Year'] + |
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"-" + |
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Math.round(d['Internet Users by World Region']) + |
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"-" + |
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i) |
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.remove(); |
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} |
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</script> |
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</body> |
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</html> |