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covid-dashboard.js
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covid-dashboard.js
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// API urls
const url1 = "https://disease.sh/v3/covid-19/historical/all?lastdays=all"; // new cases, deaths, recoveries
const url2 = "https://disease.sh/v3/covid-19/all";
const url3 = "https://disease.sh/v3/covid-19/countries/usa";
const url4 =
"https://disease.sh/v3/covid-19/vaccine/coverage/countries?lastdays=1";
// deploy charts & graphs in DOM
getData();
// fetch url & convert to json data format
async function getData() {
const rawData1 = await fetch(url1);
const rawData2 = await fetch(url2);
const rawData3 = await fetch(url3);
const rawData4 = await fetch(url4);
if (
rawData1 == undefined ||
rawData2 == undefined ||
rawData3 == undefined ||
rawData4 == undefined
) {
console.log("Error.");
}
let response1 = await rawData1.json();
let response2 = await rawData2.json();
let response3 = await rawData3.json();
let response4 = await rawData4.json();
graphs(response1);
charts(response2, response3);
vacc_data(response4);
}
function graphs(data) {
// contain date and number of cases
let date = [];
let cases = [];
let deaths = [];
let recovered = [];
// push date and number of cases
for (let i in Object(data.cases)) {
date.push(i);
cases.push(data.cases[i]);
deaths.push(data.deaths[i]);
recovered.push(data.recovered[i]);
}
// output to console
console.log(date);
console.log(cases);
console.log(deaths);
console.log(recovered);
// example; delete later
console.log(
cases[cases.length - 1].toLocaleString("en-US", {
notation: "compact",
compactDisplay: "short",
})
);
console.log(
deaths[deaths.length - 1].toLocaleString("en-US", {
notation: "compact",
compactDisplay: "short",
})
);
console.log(
recovered[recovered.length - 1].toLocaleString("en-US", {
notation: "compact",
compactDisplay: "short",
})
);
let allGraphs = document.getElementById("allGraphs").getContext("2d");
new Chart(allGraphs, {
type: "line",
data: {
labels: date,
datasets: [
{
label: "Cases",
data: cases,
backgroundColor: ["#49A9EA"],
borderColor: ["#2D85CF"],
},
{
label: "Deaths",
data: deaths,
backgroundColor: ["#EE474C"],
borderColor: ["#AB271E"],
},
{
label: "Recovered",
data: recovered,
backgroundColor: ["#47EE63"],
borderColor: ["#29BF00"],
},
],
},
options: {
responsive: true,
plugins: {
legend: {
display: true,
position: "bottom",
},
title: {
text: "Global Statistics",
display: true,
},
},
scales: {
x: {
title: {
display: true,
text: "date",
},
},
y: {
title: {
display: true,
text: "count",
},
ticks: {
callback: function (value, index, values) {
return value / 1e6 + "M";
},
},
},
},
},
});
}
function charts(globalData, usaData) {
let globalCases = globalData.cases;
let globalDeaths = globalData.deaths;
let globalRecovered = globalData.recovered;
let usaCases = usaData.cases;
let usaDeaths = usaData.deaths;
let usaRecovered = usaData.recovered;
console.log(globalCases);
console.log(usaCases);
let globalPie = document.getElementById("globalPie").getContext("2d");
new Chart(globalPie, {
type: "pie",
data: {
labels: ["Cases", "Deaths", "Recovered"],
datasets: [
{
data: [globalCases, globalDeaths, globalRecovered],
backgroundColor: ["#49A9EA", "#EE474C", "#47EE63"],
borderColor: ["#2D85CF", "#AB271E", "#29BF00"],
hoverOffset: 4,
},
],
},
options: {
responsive: true,
plugins: {
legend: {
display: true,
position: "bottom",
},
title: {
text: "Global Covid-19 Pie Chart",
display: true,
},
},
},
});
let usaPie = document.getElementById("usaPie").getContext("2d");
new Chart(usaPie, {
type: "pie",
data: {
labels: ["Cases", "Deaths", "Recovered"],
datasets: [
{
data: [usaCases, usaDeaths, usaRecovered],
backgroundColor: ["#49A9EA", "#EE474C", "#47EE63"],
borderColor: ["#2D85CF", "#AB271E", "#29BF00"],
hoverOffset: 4,
},
],
},
options: {
responsive: true,
maintainAspectRatio: true,
plugins: {
legend: {
display: true,
position: "bottom",
},
title: {
text: "USA Covid-19 Pie Chart",
display: true,
},
},
},
});
}
// vaccination data
function vacc_data(data) {
// array of countries & vacc_count
let v_data = [];
// create array of pairs (country, vaccination_count)
for (let i in Object(data)) {
let country = data[i].country;
let count = Object.values(data[i].timeline)[0];
index = [country, count];
v_data.push(index);
}
// show total count of vacc
let total = 0;
for (let i in v_data) {
total += v_data[i][1];
}
total = total.toLocaleString("en-US", {notation: "compact", compactDisplay: "short"});
console.log(total);
const vaccCount = document.createElement("h5");
vaccCount.textContent = total;
console.log(vaccCount);
const vaccSection = document.getElementById("total-vacc");
vaccSection.append(total);
// sort highest-to-lowest
v_data.sort(function (a, b) {
return b[1] - a[1];
});
console.log(v_data);
// find left-over for pie chart
let totalall = 0;
let total10 = 0;
for (let i in v_data) {
totalall += v_data[i][1];
}
for (let i = 0; i < 10; ++i) {
total10 += v_data[i][1];
}
console.log(totalall);
console.log(total10);
console.log(totalall-total10);
let other = totalall-total10;
// build vaccine pie chart
let vaccPie = document.getElementById("vaccPie").getContext("2d");
new Chart(vaccPie, {
type: "pie",
data: {
labels: [
v_data[0][0],
v_data[1][0],
v_data[2][0],
v_data[3][0],
v_data[4][0],
v_data[5][0],
v_data[6][0],
v_data[7][0],
v_data[8][0],
v_data[9][0],
"other",
],
datasets: [
{
data: [
v_data[0][1],
v_data[1][1],
v_data[2][1],
v_data[3][1],
v_data[4][1],
v_data[5][1],
v_data[6][1],
v_data[7][1],
v_data[8][1],
v_data[9][1],
other,
],
backgroundColor: [
"#e6194B",
"#4363d8",
"#ffe119",
"#3cb44b",
"#42d4f4",
"#911eb4",
"#bfef45",
"#f032e6",
"#000075",
"#f58231",
"#808080",
],
hoverOffset: 4,
},
],
},
options: {
responsive: true,
maintainAspectRatio: true,
plugins: {
legend: {
display: true,
position: "bottom",
},
title: {
text: "Top 10 Most Vaccinated by Volume",
display: true,
},
},
},
});
}