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d3-path-generators.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" />
<title>D3 Path Generators</title>
</head>
<body>
<div id="canvas"></div>
<script type="text/javascript" src="scatterplot-data-1.js"></script>
<script type="text/javascript" src="applestocks-data.js"></script>
<script type="module">
import * as d3 from "https://cdn.jsdelivr.net/npm/d3@7/+esm";
let width = 900;
let height = 300;
let margin = {
top: 25,
bottom: 35,
left: 40,
right: 20,
};
const x = d3
.scaleUtc()
.domain(d3.extent(apple_stocks_data, (d) => new Date(d.Date)))
.nice()
.range([0, width]);
const y = d3
.scaleLinear()
.domain(d3.extent(apple_stocks_data, (d) => d.Close))
.nice()
.range([height, 0]);
const line = d3
.line()
.curve(d3.curveBasis)
.x((d) => x(new Date(d.Date)))
.y((d) => y(d.Close));
let svg = d3
.create("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom);
const g = svg
.append("g")
.attr("transform", `translate(${margin.left},${margin.top})`);
g.append("g")
.attr("transform", `translate(0,${height})`)
.call(d3.axisBottom(x).ticks(width / 80));
g.append("g").call(d3.axisLeft(y));
g.append("g")
.attr("stroke", "steelblue")
.attr("stroke-width", 1.5)
.attr("fill", "none")
.selectAll("circle")
.data(apple_stocks_data)
.join("circle")
.attr("cx", (d) => x(new Date(d.Date)))
.attr("cy", (d) => y(d.Close))
.attr("r", 1);
g.append("g")
.append("path")
.datum(apple_stocks_data)
.attr("d", line)
.style("fill", "none")
.style("stroke", "#000")
.style("stroke-width", 1.5);
document.getElementById("canvas").append(svg.node());
</script>
</body>
</html>