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produk.js
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produk.js
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const totalUnit = document.getElementById("total-unit");
const totalSalesPrice = document.getElementById("total-sales-price");
const averageSales = document.getElementById("average-sales");
const totalCommercial = document.getElementById("total-commercial-unit");
const totalResidential = document.getElementById("total-residential-unit");
const totalTransaction = document.getElementById("total-transaction");
const filterYearElement = document.getElementById("year");
const IDR = new Intl.NumberFormat("en-US", {
style: "currency",
currency: "USD",
});
let transactionsChart1; // Global variable to hold the first chart instance
let transactionsChart2; // Global variable to hold the second chart instance
let transactionsChart3; // Global variable to hold the third chart instance (line chart)
let transactionsChart4; // Global variable to hold the fourth chart instance (line chart for sales price)
let transactionsChart5; // Global variable to hold the fifth chart instance (pie chart for total sales price by building class category)
let transactionsChart6; // Global variable to hold the sixth chart instance (horizontal bar chart for sales price by neighborhood)
function fetchDataJson(year) {
fetch("./DATA10.json")
.then((res) => {
if (!res.ok) {
throw new Error(`HTTP error! Status: ${res.status}`);
}
return res.json();
})
.then((data) => {
const dataSlice = year
? data.filter((el) => el["SALE_DATE"].split("-")[0] === year)
: data;
const dataSalesObject = {}; // { QUEENS: totalSalesPrice, MANHATTAN: totalSalesPrice, ...}
const dataTransactionsObject = {}; // { QUEENS: 10, MANHATTAN: 20, ...}
const dataTransactionsMonthlyObject = {}; // { '2023-01': 10, '2023-02': 15, ...}
const dataSalesMonthlyObject = {}; // { '2023-01': 100000, '2023-02': 150000, ...}
const dataSalesBuildingCategory = {}; // { '01 ONE FAMILY HOMES': totalSalesPrice, '02 TWO FAMILY HOMES': totalSalesPrice, ... }
const dataSalesNeighborhood = {};
for (let i = 0; i < dataSlice.length; i++) {
const borough = dataSlice[i].BOROUGH;
const salePrice = Number(dataSlice[i]["SALE_PRICE"]);
const saleDate = dataSlice[i]["SALE_DATE"].slice(0, 7); // Get YYYY-MM format
const buildingCategory = dataSlice[i]["BUILDING_CLASS_CATEGORY"];
const neighborhoodCategory = dataSlice[i]["NEIGHBORHOOD"];
if (isNaN(salePrice)) {
// Skip entries with invalid or missing sale price
continue;
}
if (dataSalesObject[borough]) {
dataSalesObject[borough] += salePrice;
} else {
dataSalesObject[borough] = salePrice;
}
if (dataTransactionsObject[borough]) {
dataTransactionsObject[borough] += 1;
} else {
dataTransactionsObject[borough] = 1;
}
if (dataTransactionsMonthlyObject[saleDate]) {
dataTransactionsMonthlyObject[saleDate] += 1;
} else {
dataTransactionsMonthlyObject[saleDate] = 1;
}
if (dataSalesMonthlyObject[saleDate]) {
dataSalesMonthlyObject[saleDate] += salePrice;
} else {
dataSalesMonthlyObject[saleDate] = salePrice;
}
if (dataSalesBuildingCategory[buildingCategory]) {
dataSalesBuildingCategory[buildingCategory] += salePrice;
} else {
dataSalesBuildingCategory[buildingCategory] = salePrice;
}
if (dataSalesNeighborhood[neighborhoodCategory]) {
dataSalesNeighborhood[neighborhoodCategory] += salePrice;
} else {
dataSalesNeighborhood[neighborhoodCategory] = salePrice;
}
}
const yearData = dataSlice.map((el) => Number(el["SALE_DATE"].split("-")[0]));
const yearDataMap = [...new Set(yearData)].sort((a, b) => a - b);
const totalLotData = dataSlice.reduce(
(acc, curr) => acc + Number(curr["LOT"]),
0
);
const totalSalesPriceData = dataSlice.reduce(
(acc, curr) => acc + Number(curr["SALE_PRICE"]),
0
);
const averageSalesData = totalSalesPriceData / dataSlice.length;
const totalCommercialData = dataSlice.reduce(
(acc, curr) => acc + Number(curr["COMMERCIAL_UNITS"]),
0
);
const totalResidentialData = dataSlice.reduce(
(acc, curr) => acc + Number(curr["RESIDENTIAL_UNITS"]),
0
);
const totalUnitData = totalCommercialData + totalResidentialData;
const formatTotalSales = IDR.format(totalSalesPriceData);
const formatAverageSales = IDR.format(averageSalesData);
const formatTotalUnit = totalUnitData.toLocaleString();
const formatCommercial = totalCommercialData.toLocaleString();
const formatResidential = totalResidentialData.toLocaleString();
totalSalesPrice.innerHTML = formatTotalSales;
averageSales.innerHTML = formatAverageSales;
totalCommercial.innerHTML = formatCommercial;
totalResidential.innerHTML = formatResidential;
totalTransaction.innerHTML = dataSlice.length.toLocaleString();
totalUnit.innerHTML = formatTotalUnit;
if (
!year &&
filterYearElement.options.length <= yearDataMap.length
) {
for (let i = 0; i < yearDataMap.length; i++) {
const optionElement = document.createElement("option");
optionElement.value = yearDataMap[i];
optionElement.innerText = yearDataMap[i];
filterYearElement.appendChild(optionElement);
}
filterYearElement.addEventListener("change", renderDataByFilterYear);
}
const labelTransactionsChart = Object.keys(dataTransactionsObject);
const dataTransactionsChart = Object.values(dataTransactionsObject);
const salesPrices = Object.values(dataSalesObject);
// Destroy the previous chart instances if they exist
if (transactionsChart1) {
transactionsChart1.destroy();
}
if (transactionsChart2) {
transactionsChart2.destroy();
}
if (transactionsChart3) {
transactionsChart3.destroy();
}
if (transactionsChart4) {
transactionsChart4.destroy();
}
if (transactionsChart5) {
transactionsChart5.destroy();
}
if (transactionsChart6) {
transactionsChart6.destroy();
}
const ctxBarChart1 = document.getElementById("chart-1").getContext("2d");
transactionsChart1 = renderBarChart(ctxBarChart1, labelTransactionsChart, dataTransactionsChart, 'Total Transactions by Borough');
const ctxBarChart2 = document.getElementById("chart-2").getContext("2d");
transactionsChart2 = renderBarChart(ctxBarChart2, labelTransactionsChart, salesPrices, 'Total Sales Price by Borough', true);
const monthlyLabels = Object.keys(dataTransactionsMonthlyObject).sort();
const monthlyData = monthlyLabels.map(label => dataTransactionsMonthlyObject[label]);
const ctxLineChart = document.getElementById("chart-3").getContext("2d");
transactionsChart3 = renderLineChart(ctxLineChart, monthlyLabels, monthlyData, 'Total Transactions per Month');
const monthlySalesData = monthlyLabels.map(label => dataSalesMonthlyObject[label]);
const ctxLineChartSales = document.getElementById("chart-4").getContext("2d");
transactionsChart4 = renderLineChart(ctxLineChartSales, monthlyLabels, monthlySalesData, 'Total Sales Price per Month');
// Select top 5 building categories by sales price and sum up the rest
const sortedBuildingCategories = Object.entries(dataSalesBuildingCategory).sort((a, b) => b[1] - a[1]);
const top5Categories = sortedBuildingCategories.slice(0, 5);
let otherTotalSales = 0;
for (let i = 5; i < sortedBuildingCategories.length; i++) {
otherTotalSales += sortedBuildingCategories[i][1];
}
top5Categories.push(["Other", otherTotalSales]);
const top5Labels = top5Categories.map(entry => entry[0]);
const top5Data = top5Categories.map(entry => entry[1]);
const ctxPieChart = document.getElementById("chart-5").getContext("2d");
transactionsChart5 = renderPieChart(ctxPieChart, top5Labels, top5Data, 'Total Sales Price by Building Class Category');
// Horizontal Bar Chart for Neighborhood Sales Price
const sortedNeighborhoods = Object.entries(dataSalesNeighborhood).sort((a, b) => b[1] - a[1]);
const top10Neighborhoods = sortedNeighborhoods.slice(0, 10);
const top10NeighborhoodsLabels = top10Neighborhoods.map(entry => entry[0]);
const top10NeighborhoodsData = top10Neighborhoods.map(entry => entry[1]);
const ctxBarChart6 = document.getElementById("chart-6").getContext("2d");
transactionsChart6 = renderHorizontalBarChart(ctxBarChart6, top10NeighborhoodsLabels, top10NeighborhoodsData, 'Total Sales Price by Neighborhood');
})
.catch((error) => {
console.log({ error });
});
}
fetchDataJson(); // First render
function getRandomColor() {
const letters = '0123456789ABCDEF';
let color = '#';
for (let i = 0; i < 6; i++) {
color += letters[Math.floor(Math.random() * 16)];
}
return color;
}
function renderBarChart(ctx, labels, data, title = "Sales Price") {
const backgroundColors = labels.map(() => getRandomColor());
const borderColors = backgroundColors.map(color => color.replace('0.2', '1'));
return new Chart(ctx, {
type: "bar",
data: {
labels: labels,
datasets: [
{
label: title,
data: data,
borderWidth: 1,
backgroundColor: backgroundColors,
borderColor: borderColors,
},
],
},
options: {
responsive: true,
maintainAspectRatio: false,
scales: {
y: {
beginAtZero: true,
},
},
plugins: {
legend: {
display: false,
},
title: {
display: true,
text: `# ${title}`,
},
},
},
});
}
function renderLineChart(ctx, labels, data, title = "Total Transactions per Month") {
return new Chart(ctx, {
type: 'line',
data: {
labels: labels,
datasets: [{
label: title,
data: data,
fill: false,
borderColor: 'rgba(75, 192, 192, 1)',
tension: 0.1
}]
},
options: {
responsive: true,
maintainAspectRatio: false,
scales: {
y: {
beginAtZero: true,
},
},
plugins: {
legend: {
display: false,
},
title: {
display: true,
text: `# ${title}`,
},
},
}
});
}
function renderPieChart(ctx, labels, data, title = "Total Sales Price by Building Class Category") {
const backgroundColors = labels.map(() => getRandomColor());
return new Chart(ctx, {
type: 'pie',
data: {
labels: labels,
datasets: [{
label: title,
data: data,
backgroundColor: backgroundColors
}]
},
options: {
responsive: true,
maintainAspectRatio: false,
plugins: {
legend: {
position: "bottom",
},
title: {
display: true,
text: `# ${title}`,
},
},
},
});
}
function renderHorizontalBarChart(ctx, labels, data, title) {
return new Chart(ctx, {
type: 'bar',
data: {
labels: labels,
datasets: [{
label: title,
data: data,
backgroundColor: labels.map(() => getRandomColor()),
borderColor: labels.map(() => getRandomColor().replace('0.2', '1')),
borderWidth: 1
}]
},
options: {
responsive: true,
maintainAspectRatio: false,
indexAxis: 'y', // This is what makes the bar chart horizontal
scales: {
x: {
beginAtZero: true
}
},
plugins: {
legend: {
display: false,
},
title: {
display: true,
text: `# ${title}`,
},
}
}
});
}
function renderDataByFilterYear(el) {
fetchDataJson(el.target.value);
}