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netzwerg/.block

Last active March 8, 2017 11:36
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D3.js Linear Scale
Raw
.block
license: apache-2.0
border: no
Raw
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Linear Scale</title>
<style>
body {
font: 10px sans-serif;
}
h2 {
margin-top: 0;
color: grey;
}
.chart {
background-color: lightgrey;
padding: 30px;
}
</style>
</head>
<body>
<h2>Continuous Input Domain &rarr; Continuous Output Range</h2>
<svg class="chart"></svg>
<script src="https://d3js.org/d3.v4.js"></script>
<script>
const chartWidth = 50;
const chartHeight = 300;
const data = [30, 20, 10, 200];
const yExtent = d3.extent(data); // [min, max]
const yScale = d3.scaleLinear()
.domain(yExtent)
.range([chartHeight, 0]); // y-down
const svg = d3.select(".chart")
.attr("width", chartWidth)
.attr("height", chartHeight)
.append("g");
svg.selectAll("circle")
.data(data)
.enter()
.append("circle")
.attr("cx", chartWidth / 2)
.attr("cy", yScale) // d => yScale(d)
.attr("r", 20)
.style("fill", "steelblue")
.style("stroke", "lightsteelblue");
const yAxis = d3.axisLeft(yScale);
svg.call(yAxis);
</script>
</body>
</html>
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