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aggregate.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Data Visualization with D3</title>
<script
src="https://cdnjs.cloudflare.com/ajax/libs/d3/7.9.0/d3.min.js"
integrity="sha512-vc58qvvBdrDR4etbxMdlTt4GBQk1qjvyORR2nrsPsFPyrs+/u5c3+1Ct6upOgdZoIl7eq6k3a1UPDSNAQi/32A=="
crossorigin="anonymous"
referrerpolicy="no-referrer"
></script>
</head>
<body>
<script>
d3.csv('aggregated_data.csv').then((data) => {
const aggregatedData = d3.group(data, d => d.category);
// Calculate sum of values for each category
const sumByCategory = new Map();
aggregatedData.forEach((value, key) => {
const sum = d3.sum(value, d => d.value);
sumByCategory.set(key, sum);
});
console.log(sumByCategory);
}).catch((error) => {
console.error("Error loading data: ", error);
});
</script>
</body>
</html>