Need for Speed

4c:I[132969,["$2"],"IconMark"] 25:["$","title",null,{"children":"Michael Asare's Data Visualization | Michael Asare | Observable"}] 49:T4bc,4a:T4c47,{ // import * as d3 from "https://cdn.skypack.dev/d3@7"; const HEIGHT = 400; const WIDTH = 1000; const headerText = document.getElementById("header-text"); const subText = document.getElementById("sub-text"); let timers = []; const clearTimers = () => { for(const timer of timers) { clearInterval(timer); } timers = []; } function fadeIn( elem, ms ) { if( ! elem ) return; elem.style.opacity = 0; elem.style.filter = "alpha(opacity=0)"; if( ms ) { var opacity = 0; var timer = setInterval( function() { opacity += 50 / ms; if( opacity >= 1 ) { clearInterval(timer); opacity = 1; } elem.style.opacity = opacity; elem.style.filter = "alpha(opacity=" + opacity * 100 + ")"; }, 50 ); timers.push(timer); } else { elem.style.opacity = 1; elem.style.filter = "alpha(opacity=1)"; } } const invis = (element) => { element.style.visibility = "hidden"; } const vis = (element) => { element.style.visibility = "visible"; } const header = (text, ms) => { headerText.innerHTML = text; if(!ms) { ms = 5000; } fadeIn(headerText, ms); } const sub = (text, ms) => { subText.innerHTML = text; if(!ms) { ms = 5000; } fadeIn(subText, ms); } const delaySub = (text, ms, delay) => { let timer = setTimeout(() => { sub(text, ms); }, delay); timers.push(timer); } const fadeButton = (button) => { button.disabled = true; } const unFadeButton = (button) => { button.disabled = false; } const previousButton = document.getElementById("previous-button") const nextButton = document.getElementById("next-button") const restartButton = document.getElementById("restart-button") const flashNext = (delay) => { if(delay == undefined) { delay = 0; } const timer = setTimeout(() => { const interval = setInterval(() => { nextButton.style.backgroundColor = "lightgreen"; nextButton.style.border = "solid darkgreen 2px"; nextButton.style.borderRadius = "2px"; const secondTimer = setTimeout(() => { resetNext(); }, 500); timers.push(secondTimer); }, 1000); timers.push(interval); }, delay) timers.push(timer); } const resetNext = () => { nextButton.style.backgroundColor = ""; nextButton.style.border = ""; nextButton.style.borderRadius = ""; } const graphic = d3.select("#graphic") let speed_data; let pop_data; (async() => { const speed_file = FileAttachment("worldwide_speed_league_data.csv"); const pop_file = FileAttachment("popdata.csv"); speed_data = await speed_file.csv("./worldwide_speed_league_data.csv"); pop_data = await pop_file.csv("./") })(); const clearGraphic = () => { d3.selectAll("#graphic > *").remove(); } const clearFilters = () => { d3.selectAll("#filter > *").remove(); } const cleanUpPanel = () => { clearTimers(); clearGraphic(); clearFilters(); resetNext(); } const objectExists = (id) => { return document.getElementById(id) != null; } let BLUE_DOT; const grabBlueDot = () => { const blueDotId = "blue-dot" if(!objectExists(blueDotId)) { BLUE_DOT = graphic.append("circle") .attr("r", 5) .attr("fill", "blue") .attr("id", blueDotId); } return BLUE_DOT; } const grabBlueDotAt = (x, y) => { if(!x) { x = WIDTH/2; } if(!y) { y = HEIGHT/2; } return grabBlueDot().attr("cx", x).attr("cy", y); } let GRAY_LINE; const grabGrayLine = () => { const grayLineId = "gray-line" if(!objectExists(grayLineId)) { GRAY_LINE = graphic.append("line") .attr("x1", 200) .attr("y1", 200) .attr("x2", WIDTH - 200) .attr("y2", 200) .attr("stroke", "lightgray") .attr("stroke-width", "5px") .attr("id", grayLineId); } return GRAY_LINE; } const moveRight = (object, duration, delay) => { if(duration == undefined) { duration = 1000; } if(delay == undefined) { delay = 0; } object .transition() .ease(d3.easeLinear) .delay(delay) .duration(duration) .attr("cx", WIDTH - 200) } const simDownload = (object, speed, delay, size) => { if(size == undefined) { size = 3; // Photograph } if(delay == undefined) { delay = 1000; } if(speed == undefined) { speed = 92.42/8; } const duration = size / speed; moveRight(object, duration*1000, delay); } const startupSequence = () => { cleanUpPanel(); invis(headerText); invis(subText); fadeButton(previousButton); unFadeButton(nextButton); vis(headerText); vis(subText); header("Need for Speed", 3000); sub("A visualization depicting internet speeds around the globe", 4000); flashNext(4500); } const photoExplainPage = () => { cleanUpPanel(); invis(headerText); vis(subText); const delay = 1000; sub("An average smartphone photo takes up 3 MB.", delay); const imgsrc = "./img/smartphone-image.jpg" const imgHeight = 500 const imgWidth = 500 const img = graphic.append("image") .attr("opacity", 0) .attr("href", imgsrc) .attr("height", imgHeight) .attr("width", imgWidth) .attr("x", WIDTH/2 - imgHeight/2) .attr("y", HEIGHT/2 - imgWidth/2) .transition() .ease(d3.easeLinear) .duration(1000) .delay(delay) .attr("opacity", 1); flashNext(3000); } const blueDotPage = () => { cleanUpPanel(); invis(headerText); vis(subText); const delay = 2000; sub("This blue dot represents 30 MBs.", delay); const blueDot = grabBlueDotAt(WIDTH/2, 100) .attr("opacity", 0) .transition() .ease(d3.easeLinear) .duration(1000) .attr("opacity", 1); flashNext(4000); } const firstSlider = () => { cleanUpPanel(); invis(headerText); vis(subText); const grayLine = grabGrayLine() .attr("opacity", 0) .transition() .ease(d3.easeLinear) .delay(6000) .duration(1500) .attr("opacity", 1); const blueDot = grabBlueDotAt(WIDTH/2, 100) .transition() .ease(d3.easeQuadOut) .delay(2000) .duration(3000) .attr("cx", 200) .attr("cy", 200); sub("The average US download speed is 11.55 MBs/second.", 2000); delaySub("This blue dot will travel across the gray line in the time it takes for 3 MBs to be downloaded over that connection speed.", 1000, 11000); delaySub("Ready?", 1000, 18000); flashNext(20000); } const firstDemo = () => { cleanUpPanel(); vis(headerText); invis(subText); const regionName = "US"; const speedInMbs = 94.22; const speed = (speedInMbs / 8.0).toFixed(2); header(`${regionName}: ${speed} MBs/second.`, 1000); const grayLine = grabGrayLine(); const blueDot = grabBlueDotAt(200, 200); const size = 30; simDownload(blueDot, speed, 4000, size); const timer = setTimeout(() => { vis(subText); sub("Not too shabby.", 1000); }, 6000); timers.push(timer); flashNext(8000); } const nextSeveralExplained = () => { cleanUpPanel(); invis(headerText); vis(subText); sub("For the next several slides, I'll demo some other download speeds.", 1000); flashNext(3000); } const countryDemo = (regionName, speedInMbs, text) => { cleanUpPanel(); vis(headerText); invis(subText); const speed = (speedInMbs / 8.0).toFixed(2); header(`${regionName}: ${speed} MBs/second.`, 1000); const grayLine = grabGrayLine(); const blueDot = grabBlueDotAt(200, 200); const size = 30; simDownload(blueDot, speed, 4000, size); vis(subText); sub(text, 1000); const durationTillFlash = 1000*(size/speed) + 5000; flashNext(durationTillFlash); } let PAGE_NUMBER = 0; const demoRegions = [ {"name": "Virginia", "speed": 193.10, "subtext": "Consistently rated in the top 3 states for internet speeds."}, {"name": "US (Rural)", "speed": 45.90, "subtext": "Internet access is far more limited in these areas."}, {"name": "Charlottsville", "speed": 169.80, "subtext": "Good ol' Albemarle County."}, {"name": "High Speed Gigabit Internet", "speed": 1000.00, "subtext": "See Ting Internet."}, {"name": "Canada", "speed": 79.96, "subtext": "Our partners up north are just a little behind us."}, {"name": "Mexico", "speed": 18.83, "subtext": "Mexico's internet infrastructure is sub-optimal in many places in the country."}, {"name": "United Kingdom", "speed": 51.48, "subtext": "Take a look across the pond."}, {"name": "Australia", "speed": 40.50, "subtext": "Surprisingly slow for a modernized nation."}, {"name": "Liechtenstein", "speed": 211.26, "subtext": "A small european country with blazing internet speeds."}, ]; const countryDemoRouter = () => { cleanUpPanel(); const PAGES_BEFORE_DEMOS = 5; const i = PAGE_NUMBER - PAGES_BEFORE_DEMOS; countryDemo(demoRegions[i]["name"], demoRegions[i]["speed"], demoRegions[i]["subtext"]); } const dynamicSpeedTest = () => { cleanUpPanel(); invis(headerText); invis(subText); sub("", 1); vis(subText); const d3SubText = d3.selectAll("#sub-text"); const datalist = d3SubText.append("datalist") .attr("id", "countries"); speed_data.forEach(d => { const country = d["Country"]; if(country != "") { datalist.append("option").attr("value", country); } }) d3SubText.append("label") .attr("for", "countries") const input = d3SubText.append("input") .attr("list", "countries") .attr("name", "countries") .attr("id", "countries") .attr("class", "selected-input"); d3SubText.append("button") .style("left-margin", "5px") .text("Visualize") .on("click", () => { const currentCountry = document.getElementsByClassName("selected-input")[0].value; let speedInMbs; speed_data.forEach(d => { const country = d["Country"]; if(currentCountry == country) { speedInMbs = d["Mean download speed (Mbps)"]; } }) if(speedInMbs != undefined) { const speed = (speedInMbs / 8.0).toFixed(2); header(`${currentCountry}: ${speed} MBs/second.`, 1); vis(headerText); const grayLine = grabGrayLine(); const blueDot = grabBlueDotAt(200, 200); const size = 30; simDownload(blueDot, speed, 0, size); } }); } const dynamicGraph = () => { cleanUpPanel(); invis(headerText); invis(subText); sub("", 1); header("Download Speed, Population, and Land Area", 1); vis(headerText); vis(subText); const d3SubText = d3.selectAll("#sub-text"); let maxSpeedInMbs; speed_data.forEach(d => { const some_speed = d["Mean download speed (Mbps)"] maxSpeedInMbs = maxSpeedInMbs != undefined ? Math.max(some_speed, maxSpeedInMbs) : 0; }) console.log(maxSpeedInMbs); const default_min = 0; const default_max = maxSpeedInMbs + 2; d3SubText .append("p") .text("Min Speed in Mbps"); d3SubText .append("input") .attr("type", "range") .attr("min", 0) .attr("max", maxSpeedInMbs) .attr("value", default_min) .attr("name", "min-slider") .attr("id", "min-slider"); d3SubText .append("label") .attr("for", "min-slider") .attr("id", "min-slider-value") .text(default_min); d3SubText .append("p") .text("Max Speed in Mbps"); d3SubText .append("input") .attr("type", "range") .attr("min", 0) .attr("max", maxSpeedInMbs + 2) .attr("value", default_max) .attr("name", "max-slider") .attr("id", "max-slider"); d3SubText .append("label") .attr("id", "max-slider-value") .attr("for", "max-slider") .text(default_max); const margin = {top: 10, right: 30, bottom: 30, left: 60}; const ADJ_WIDTH = WIDTH - margin.left - margin.right; const ADJ_HEIGHT = HEIGHT - margin.top - margin.bottom; graphic.append("g") .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); const x = d3.scaleLog().domain([1, 18000000]).range([0, ADJ_WIDTH]) const y = d3.scaleLog().domain([1, 1500000]).range([ADJ_HEIGHT, 0]) const x_transform_string = "translate(50," + ADJ_HEIGHT + ")"; const y_transform_string = "translate(50," + 0 + ")"; graphic.append("g").attr("transform", x_transform_string).call(d3.axisBottom(x)); graphic.append("g").attr("transform", y_transform_string).call(d3.axisLeft(y)); graphic.append("text") .attr("x", WIDTH/2) .attr("y", HEIGHT-10) .text("Land Area km^2 (Log Scale)") .style("text-anchor", "middle") .style("font-size", "11"); graphic.append("text") .attr("x", WIDTH/2) .attr("y", -280) .text("Population (Log Scale)") .style("font-size", "11") .attr("class", "rotated"); const colors = { "ASIA (EX. NEAR EAST)": "#E5989B", "BALTICS": "#C0BDA5", "CARIBBEAN": "#F4D35E", "CENTRAL AMERICA": "#FF3CC7", "CIS (FORMER USSR)": "#95969D", "EASTERN EUROPE": "#464D77", "NEAR EAST": "#95A472", "NORTHERN AMERICA": "#FF7F11", "NORTHERN AFRICA": "#9EE493", "OCEANIA": "#336699", "SOUTH AMERICA": "#F4E04D", "SUB-SAHARAN AFRICA": "#35281D", "WESTERN EUROPE": "#B49FCC", } let legend_x = WIDTH/16; let legend_y = HEIGHT/16; for(const region of Object.keys(colors)) { const color = colors[region]; graphic.append("text") .attr("x", legend_x + 3) .attr("y", legend_y) .attr("alignment-baseline","middle") .style("fill", color) .style("font-size", "11px") .text(region) legend_y += 12; } const valid_countries = new Set() let country_regions = {} let country_speeds = {} speed_data.forEach(d => { const country_name = d["Country"]; valid_countries.add(country_name); const region = d["Region"]; country_regions[country_name] = region; const speed = d["Mean download speed (Mbps)"]; country_speeds[country_name] = speed; }); const g = graphic.append('g'); pop_data.filter(d => valid_countries.has(d["name"])).forEach(d => { const div = g.append('g').attr('class', 'dot-group').attr("speed", country_speeds[d["name"]]); div.append('rect') .attr('x', () => { return x(d['area']); }) .attr('y', () => { return y(d['pop2022']); }) .attr('width', 10) .attr('height', 10) .style("fill", () => { const country = d["name"]; const region = country_regions[country]; return colors[region]; }) .style("opacity", 0.7) .style("transform-box", "fill-box") .style("transform-origin", "50% 50%") .style("animation-duration", () => { const country = d["name"]; const speed = country_speeds[country]/8; const size = 10; const duration = size/speed; return `${duration}s` }) .style("animation-name", "rotate") .style("animation-iteration-count", "infinite") .attr("value", () => { const country = d["name"]; return country_speeds[country]; }) .attr("country", () => d["name"]) .attr("transform", y_transform_string) .attr("class", "dot") div.append('text') .attr("class", "tooltiptext") .attr("x", WIDTH/4) .attr("y", HEIGHT/4) .text(() => { const country_name = d["name"]; const country_speed = (country_speeds[country_name]/8).toFixed(2); return `${country_name}: ${country_speed}MB/s` }); }) const max_slider = document.getElementById("max-slider"); const min_slider = document.getElementById("min-slider"); const filter_dots = () => { const groups = document.getElementsByClassName("dot-group"); const max_speed = Number(max_slider.value); const min_speed = Number(min_slider.value); console.log(max_speed) console.log(min_speed) for(const group of groups) { const speed_val = Number(group.getAttribute("speed")); console.log(speed_val) if(speed_val >= min_speed && speed_val <= max_speed ) { group.style.visibility = ""; } else { group.style.visibility = "hidden"; } } } max_slider.oninput = () => { document.getElementById("max-slider-value").innerHTML = max_slider.value; filter_dots(); } min_slider.oninput = () => { document.getElementById("min-slider-value").innerHTML = min_slider.value; filter_dots(); } } const pageFunctions = [ startupSequence, blueDotPage, firstSlider, firstDemo, nextSeveralExplained, ...Array(demoRegions.length).fill(countryDemoRouter), dynamicSpeedTest, dynamicGraph, ]; 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Need for Speed

A visualization depicting internet speeds around the globe

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