FileAttachment("zoomableAreaChart@3.js")
FileAttachment("data.json")
chart = {
const zoom = d3.zoom()
.scaleExtent([1, 32])
.extent([[margin.left, 0], [width - margin.right, height]])
.translateExtent([[margin.left, -Infinity], [width - margin.right, Infinity]])
.on("zoom", zoomed);
const svg = d3.create("svg")
.attr("viewBox", [0, 0, width, height]);
const clip = DOM.uid("clip");
svg.append("clipPath")
.attr("id", clip.id)
.append("rect")
.attr("x", margin.left)
.attr("y", margin.top)
.attr("width", width - margin.left - margin.right)
.attr("height", height - margin.top - margin.bottom);
const path = svg.append("path")
.attr("clip-path", clip)
.attr("fill", "steelblue")
.attr("d", area(data, x));
const gx = svg.append("g")
.call(xAxis, x);
svg.append("g")
.call(yAxis, y);
svg.call(zoom)
.transition()
.duration(750)
.call(zoom.scaleTo, 4, [x(Date.UTC(2001, 8, 1)), 0]);
function zoomed(event) {
const xz = event.transform.rescaleX(x);
path.attr("d", area(data, xz));
gx.call(xAxis, xz);
}
return svg.node();
}
height = 500
margin = ({top: 20, right: 20, bottom: 30, left: 30})
x = d3.scaleUtc()
.domain(d3.extent(data, d => d.date))
.range([margin.left, width - margin.right])
y = d3.scaleLinear()
.domain([0, d3.max(data, d => d.value)]).nice()
.range([height - margin.bottom, margin.top])
xAxis = (g, x) => g
.attr("transform", `translate(0,${height - margin.bottom})`)
.call(d3.axisBottom(x).ticks(width / 80).tickSizeOuter(0))
yAxis = (g, y) => g
.attr("transform", `translate(${margin.left},0)`)
.call(d3.axisLeft(y).ticks(null, "s"))
.call(g => g.select(".domain").remove())
.call(g => g.select(".tick:last-of-type text").clone()
.attr("x", 3)
.attr("text-anchor", "start")
.attr("font-weight", "bold")
.text(data.y))
area = (data, x) => d3.area()
.curve(d3.curveStepAfter)
.x(d => x(d.date))
.y0(y(0))
.y1(d => y(d.value))
(data)
data = Object.assign(d3.csvParse(await FileAttachment("flights.csv").text(), d3.autoType), {y: "Flights"})
d3 = require("d3@6")
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