<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>d3.scaleLinear</title>
<script src="https://d3js.org/d3.v7.js"></script>
</head>
<body>
<script>
// Create svg and initial bars
const w = 400;
const h = 300;
const svg = d3.select("body")
.append("svg")
.attr("width", w)
.attr("height", h)
.style("fill", "yellow");
const bardata = [5, 6, 10, 3, 2, 12]; // change data values and see what happens
const xScale = d3.scaleBand()
.domain(d3.range(bardata.length))
.range([0, w])
.paddingInner(.1);
const yScale = d3.scaleLinear()
.domain([0, d3.max(bardata)])
.range([h, 0])
const bars = svg.selectAll("rect")
.data(bardata);
bars.enter().append("rect")
.attr("x", (d, i) => xScale(i))
.attr("y", d => yScale(d))
.attr("width", xScale.bandwidth())
.attr("height", d => h - yScale(d))
.attr("fill", "lightgreen");
svg.selectAll("text")
.data(bardata)
.enter()
.append("text")
.attr("x", (d, i) => xScale(i) + .5*xScale.bandwidth())
.attr("y", d => yScale(d) + 25)
.text(d => d)
.attr("fill", "blue")
.attr("text-anchor", "middle");
</script>
</body>
</html>