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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>Dynamic Heatmap</title>
<script src="https://d3js.org/d3.v7.min.js"></script>
</head>
<body>
<script>
const days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'];
const margin = { top: 50, right: 30, bottom: 30, left: 60 };
const width = 450 - margin.left - margin.right;
const height = 450 - margin.top - margin.bottom;
const svg = d3.select("body").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", `translate(${margin.left},${margin.top})`);
// Function to get the current week's Monday date
function getMonday(d) {
d = new Date(d);
let day = d.getDay(),
diff = d.getDate() - day + (day == 0 ? -6 : 1); // adjust when day is sunday
return new Date(d.setDate(diff));
}
// Function to get all days for the current week until yesterday
function getAllDays() {
const today = new Date();
const monday = getMonday(today);
const daysData = [];
const oneDay = 24 * 60 * 60 * 1000;
for (let i = 0; i < 7; i++) {
let currentDay = new Date(monday.getTime() + i * oneDay);
if (currentDay >= today) break;
daysData.push({
week: `${currentDay.getFullYear()}-${String(monday.getMonth() + 1).padStart(2, '0')}-${String(monday.getDate()).padStart(2, '0')}`,
day: days[currentDay.getDay() - 1],
value: Math.floor(Math.random() * 101) // Random value for example purposes
});
}
return daysData;
}
const data = getAllDays();
const weeks = [...new Set(data.map(d => d.week))];
const xScale = d3.scaleBand()
.range([0, width])
.domain(days)
.padding(0.05);
const yScale = d3.scaleBand()
.range([height, 0])
.domain(weeks)
.padding(0.05);
const colorScale = d3.scaleLinear()
.range(['red', 'green'])
.domain([0, 100]);
svg.append("g")
.attr("transform", `translate(0,${height})`)
.call(d3.axisBottom(xScale));
svg.append("g")
.call(d3.axisLeft(yScale));
svg.selectAll()
.data(data, function(d) { return d.day + ':' + d.week; })
.enter()
.append("rect")
.attr("x", function(d) { return xScale(d.day); })
.attr("y", function(d) { return yScale(d.week); })
.attr("width", xScale.bandwidth())
.attr("height", yScale.bandwidth())
.style("fill", function(d) { return colorScale(d.value); })
.style("stroke-width", 4)
.style("stroke", "none")
.style("opacity", 0.8);
svg.selectAll("text")
.data(data)
.enter()
.append("text")
.attr("x", function(d) { return xScale(d.day) + xScale.bandwidth() / 2; })
.attr("y", function(d) { return yScale(d.week) + yScale.bandwidth() / 2; })
.attr("dy", ".35em")
.attr("text-anchor", "middle")
.text(function(d) { return d.value + '%'; })
.style("fill", "#fff");
</script>
</body>
</html>