Public
Edited
Nov 3, 2024
data
{
function applyPercap(row) {
return {
...row,
cases_per_cap: percapita(row.count_cases, row.population),
deaths_per_cap: percapita(row.count_deaths, row.population),
new_cases_per_cap: percapita(row.new_cases, row.population),
new_deaths_per_cap: percapita(row.new_deaths, row.population),
}
}
let newArray = [];
for (let row of data) {
let result = applyPercap(row);
newArray.push(result);
}
return newArray;
}
mapData = {
// Update this to add the necessary percapita calculations just like in the example above
function applyPercap(row) {
return {
...row,
new_cases_per_cap: percapita(row.new_cases, row.population),
}
}
let newArray = [];
for (let row of data) {
let result = applyPercap(row);
newArray.push(result);
}
// Update this to use the array's map method
// If you have done it correctly, a line chart will appear below
return data
}
{
function isInCorrectRange(row) {
let correctPopulation = row.population >= 20000 && row.population <= 50000;
let isDecember = row.date.getMonth() === 11; // getMonth returns a the number of the month as an integer starting at 0
return correctPopulation && isDecember;
}
let filteredArray = [];
for (let row of mapData) {
if (isInCorrectRange(row)) {
filteredArray.push(row)
}
}
return filteredArray;
}
filteredData = {
data.filter(function(x) {
return x.population >= 20000 && x.population <= 50000
})
// Update this to return filtered mapData of only counties with >= 20,000 and <= 50,000 pop
return mapData
}
{
function countyAvg(acc, row) {
if (!acc[row.county]) {
acc[row.county] = {sum: 0, N: 0}
}
acc[row.county].sum += row.new_deaths;
acc[row.county].N += 1;
return acc;
}
let acc = {};
for (let row of filteredData) {
acc = countyAvg(acc, row)
}
return acc
}
reduceData = {
// This can stay the same
function countyAvg(acc, row) {
if (!acc[row.county]) {
acc[row.county] = {sum: 0, N: 0}
}
acc[row.county].sum += row.new_deaths;
acc[row.county].N += 1;
return acc;
}
return filteredData.reduce(countyAvg, {}) // Use reduce here. Don't forget to supply an initial accumulator object!
}
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