Interested in data visualisation, maps, JavasScript, and geology
Published
Edited
Jan 19, 2021
2 stars
chart = {
const svg = d3.create("svg").attr("viewBox", [0, 0, width, height]);
svg.append("g").call(xAxis);
const axisLinear = svg
.append("g")
.style("opacity", 1)
.call(yAxis, yLinear);
const axisPower = svg
.append("g")
.style("opacity", 0)
.call(yAxis, yPower, ",")
.call(yTickPosition, yLinear);
const path = svg
.append("g")
.attr("fill", "none")
.attr("stroke", "steelblue")
.attr("stroke-width", 0.5)
.attr("stroke-linejoin", "round")
.attr("stroke-linecap", "round")
.selectAll("path")
.data(sigmaInterfaces)
.join("path")
.style("mix-blend-mode", "multiply")
.attr("d", line(yLinear));
return Object.assign(svg.node(), {
update(y) {
const t = svg.transition().duration(750);
axisLinear.transition(t).style("opacity", y === yLinear ? 1 : 0)
.call(yTickPosition, y);
axisPower.transition(t).style("opacity", y === yPower ? 1 : 0)
.call(yTickPosition, y);
path.transition(t).attr("d", line(y));
}
});
}
chart.update(yType === "linear" ? yLinear : yPower)
line = y =>
d3
.line()
.x(d => x(d.x))
.y(d => y(d.y))
yLinear = d3
.scaleLinear()
.domain(yExtent)
.nice()
.range(yRange)
yPower = d3
.scalePow()
.exponent(25)
.domain([700, 500])
.range(yRange)
xAxis = g =>
g
.attr("transform", `translate(0,${height - margin.bottom})`)
.call(d3.axisBottom(x).ticks(10))
yAxis = (g, y, format) =>
g
.attr("transform", `translate(${margin.left},0)`)
.call(d3.axisLeft(y).ticks(height / 80, format))
.call(g =>
g
.append("text")
.attr("x", -margin.left)
.attr("y", 10)
.attr("fill", "currentColor")
.attr("text-anchor", "start")
.text("depth")
)
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.
