chart = {
const width = 640;
const height = width;
const marginTop = 20;
const marginRight = 40;
const marginBottom = 30;
const marginLeft = 40;
const x = d3.scaleLinear()
.domain([qmin, qmax]).nice()
.range([marginLeft, width - marginRight]);
const y = d3.scaleLinear()
.domain([qmin, qmax]).nice()
.range([height - marginBottom, marginTop]);
const svg = d3.create("svg")
.attr("viewBox", [0, 0, width, height])
.style("max-width", `${width}px`);
svg.append("g")
.attr("transform", `translate(0,${height - marginBottom + 6})`)
.call(d3.axisBottom(x.copy().interpolate(d3.interpolateRound)))
.call(g => g.select(".domain").remove())
.call(g => g.selectAll(".tick line").clone()
.attr("stroke-opacity", 0.1)
.attr("y1", -height))
.call(g => g.append("text")
.attr("x", width - marginRight)
.attr("y", -3)
.attr("fill", "currentColor")
.attr("font-weight", "bold")
.text("Batch 2"));
svg.append("g")
.attr("transform", `translate(${marginLeft - 6},0)`)
.call(d3.axisLeft(y.copy().interpolate(d3.interpolateRound)))
.call(g => g.select(".domain").remove())
.call(g => g.selectAll(".tick line").clone()
.attr("stroke-opacity", 0.1)
.attr("x1", width))
.call(g => g.select(".tick:last-of-type text").clone()
.attr("x", 3)
.attr("text-anchor", "start")
.attr("font-weight", "bold")
.text("Batch 1"));
svg.append("line")
.attr("stroke", "currentColor")
.attr("stroke-opacity", 0.3)
.attr("x1", x(qmin))
.attr("x2", x(qmax))
.attr("y1", y(qmin))
.attr("y2", y(qmax));
svg.append("g")
.attr("fill", "none")
.attr("stroke", "steelblue")
.attr("stroke-width", 1.5)
.selectAll("circle")
.data(d3.range(n))
.join("circle")
.attr("cx", i => x(q(qx, i)))
.attr("cy", i => y(q(qy, i)))
.attr("r", 3);
return svg.node();
}
data = FileAttachment("ceramics.csv").csv({typed: true})
batches = d3.rollup(data, v => Float64Array.from(v, d => d.value).sort(), d => d.batch)
qx = batches.get(2)
qy = batches.get(1)
n = Math.min(qx.length, qy.length)
qmin = Math.min(qx[0], qy[0])
qmax = Math.max(qx[qx.length - 1], qy[qy.length - 1])
function q(Q, i) {
if (Q.length === n) return Q[i];
const j = i / (n - 1) * (Q.length - 1);
const j0 = Math.floor(j);
const t = j - j0;
return t ? Q[j0] * (1 - t) + Q[j0 + 1] * t : Q[j0];
}
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.
