Public
Edited
Aug 1, 2023
14 forks
4 stars
chart = {
// Specify the chart’s dimensions.
const width = 928;
const height = 500;
const marginTop = 30;
const marginRight = 50;
const marginBottom = 30;
const marginLeft = 30;
// Create the horizontal, vertical and color scales.
const x = d3.scaleUtc()
.domain([fruit[0].date, fruit[fruit.length - 1].date])
.range([marginLeft, width - marginRight]);
const y = d3.scaleLinear()
.domain([0, d3.max(fruit, d => d.value)])
.range([height - marginBottom, marginTop]);
const color = d3.scaleOrdinal()
.domain(fruit.map(d => d.fruit))
.range(d3.schemeCategory10);
// Create the SVG container.
const svg = d3.create("svg")
.attr("width", width)
.attr("height", height)
.attr("viewBox", [0, 0, width, height])
.attr("style", "max-width: 100%; height: auto; font: 10px sans-serif;");
svg.append("g")
.attr("transform", `translate(0,${height - marginBottom})`)
.call(d3.axisBottom(x).ticks(width / 80).tickSizeOuter(0));
// Add a container for each series.
const serie = svg.append("g")
.selectAll()
.data(d3.group(fruit, d => d.fruit))
.join("g");
// Draw the lines.
serie.append("path")
.attr("fill", "none")
.attr("stroke", d => color(d[0]))
.attr("stroke-width", 1.5)
.attr("d", d => d3.line()
.x(d => x(d.date))
.y(d => y(d.value))(d[1]));
// Append the labels.
serie.append("g")
.attr("stroke-linecap", "round")
.attr("stroke-linejoin", "round")
.attr("text-anchor", "middle")
.selectAll()
.data(d => d[1])
.join("text")
.text(d => d.value)
.attr("dy", "0.35em")
.attr("x", d => x(d.date))
.attr("y", d => y(d.value))
.call(text => text.filter((d, i, data) => i === data.length - 1)
.append("tspan")
.attr("font-weight", "bold")
.text(d => ` ${d.fruit}`))
.clone(true).lower()
.attr("fill", "none")
.attr("stroke", "white")
.attr("stroke-width", 6);
return svg.node();
}
fruit = {
const data = await FileAttachment("fruit.csv").csv({typed: true});
return data.flatMap(d => data.columns.slice(1).map(fruit => ({date: d.date, fruit, value: d[fruit]})));
}
Plot.plot({
x: {line: true, insetRight: 40},
y: {domain: [30, 200], axis: null},
marks: [
Plot.line(fruit, {x: "date", y: "value", stroke: "fruit"}),
Plot.text(fruit, {x: "date", y: "value", text: "value", fill: "currentColor", stroke: "white", strokeWidth: 8}),
Plot.text(fruit, Plot.selectLast({x: "date", y: "value", text: "fruit", z: "fruit", textAnchor: "start", dx: 12, fontWeight: "bold"}))
]
})
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
