Interested in data visualisation, maps, JavasScript, and geology
Public
Edited
Apr 9
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6 stars
windrose = {
const svg = d3.create("svg")
.attr("viewBox", [0, 0, width, height])
.attr("font-family", "sans-serif");
const g = svg.append("g")
.attr("transform", `translate(${width/2},${height/2})`);
const stackedData = d3.stack().keys(data.columns.slice(1))(data);
g.append("g").attr("class", "axes")
.selectAll(".axis")
.data(d3.range(0, 360, 360/data.length))
.join("g")
.attr("class", "axis")
.attr("transform", (d) => `rotate(${d - 90})`)
.append("line")
.attr("x1", innerRadius)
.attr("x2", y(y.ticks(5).reverse()[0])) // to the last tick circle
.attr("fill", "none")
.attr("stroke","gray")
.attr("stroke-dasharray", "1,4");
g.append("g")
.attr("class", "rings")
.selectAll(".ring")
.data(stackedData)
.join(
enter => enter.append("g")
.attr("fill", (d) => colorScale(d.key) )
.selectAll("path")
.data((d) => d)
.join("path")
.attr("d", makeArc)
.attr("transform", `rotate(${angleOffset})`)
)
const label = g.append("g")
.attr("class", "direction-labels")
.selectAll("g")
.data(data)
.join("g")
.attr("text-anchor", "middle")
.attr("transform", (d) => `rotate(${(x(d.angle) + x.bandwidth() / 2) * 180 / Math.PI - (90 - angleOffset)}) translate(${outerRadius + 20},0)`);
const inLowerHalf = (d) => (x(d.angle) + x.bandwidth() / 2 + Math.PI / 2) % (2 * Math.PI) < Math.PI
label.append("text")
.attr("transform", (d) => inLowerHalf(d) ? "rotate(90)translate(0,6)" : "rotate(-90)translate(0,6)") // flip bottom labels
.text((d) => d.angle )
.attr("font-weight", 500)
.attr("font-size", 14);
g.call(yAxis)
const legend = g.call(addLegend)
return svg.node()
}
stackedData = d3.stack().keys(data.columns.slice(1))(data);
// the xScale is for the bars, one full turn around circle
x = d3.scaleBand()
.range([0, 2 * Math.PI])
.domain(data.map((d) => d.angle ))
.align(0);
// yScale is for the height of the bars
y = d3.scaleLinear()
.range([innerRadius, outerRadius])
.domain([0, d3.max(data, (d) => d.total )]);
colorScale = d3.scaleOrdinal()
.domain(data.columns.slice(1))
.range(d3.schemeBlues[data.columns.length-1]); // nr of wind velocity 'bins'
makeArc = d3.arc()
.innerRadius((d) => y(d[0]))
.outerRadius((d) => y(d[1]))
.startAngle((d) => x(d.data.angle) )
.endAngle((d) => x(d.data.angle) + x.bandwidth() )
.padAngle(0.02)
.padRadius(innerRadius);
addLegend = (g) => g.append("g")
.selectAll("g")
.attr("class", "legend")
.data(data.columns.slice(1).reverse())
.join("g")
.attr("transform", (_, i) => `translate(${outerRadius+30},${-outerRadius + 40 + (i - (data.columns.length - 1) / 3) * 20})`)
.call(g => g.append("rect")
.attr("width", 18)
.attr("height", 18)
.attr("fill", colorScale)
.attr("stroke", "dimgray")
.attr("stroke-width", 0.5)
)
.call(g => g.append("text")
.attr("x", 24)
.attr("y", 9)
.attr("dy", "0.35em")
.text((d) => `${d} ${data.unit}`)
.style("font-size",13)
).append("text")
yAxis = g => g.append("g")
.attr("class", "yAxis")
.selectAll("g")
.data(y.ticks(5)) // .slice(1) to skip 0
.join("g")
.call(g => g.append("circle")
.attr("fill", "none")
.attr("stroke", "gray")
.attr("stroke-dasharray", "4,4")
.attr("r", y)
)
// .call(g => g.append("text")
// .attr("y", (d) => -y(d) )
// .attr("dy", "-0.35em")
// .attr("x", -10)
// .text(y.tickFormat(5, "s"))
// .attr("font-size", 15)
// .attr("paint-order", "stroke")
// .attr("stroke-width", "1.4px")
// .attr("stroke", "white")
// )
// .call(g => g.append("text")
// .attr("y", -outerRadius + 10 )
// .attr("x", 15)
// .text("Ocurrences")
// .attr("paint-order", "stroke")
// .attr("stroke-width", "1.4px")
// .attr("stroke", "white")
// )
data = Object.assign(d3.csvParse(selectedData, (d, i, columns) => {
let t = 0;
for (let i = 1; i < columns.length; ++i) {
const columnName = columns[i]
t += +d[columnName]
}
d.total = t;
return d;
}), { unit: "km/h"})
fourtyfiveDeg = `angle,0 to 2 km/h,2 to 4 km/h,4 to 6 km/h,6 to 8 km/h,8 to 10 km/h,10 to 12 km/h,12 to 14 km/h,14 to 16 km/h,16 to 18 km/h
N,0.0,0.0,5.0,14.0,2.0,0.0,0.0,0.0,0.0
NE,0.0,1.0,5.0,3.0,1.0,0.0,0.0,0.0,0.0
E,0.0,3.0,3.0,5.0,1.0,0.0,0.0,0.0,0.0
SE,1.0,1.0,3.0,1.0,1.0,5.0,1.0,1.0,0.0
S,0.0,1.0,7.0,6.0,2.0,2.0,4.0,4.0,1.0
SW,2.0,2.0,9.0,9.0,7.0,0.0,3.0,2.0,2.0
W,1.0,2.0,10.0,14.0,2.0,1.0,1.0,1.0,2.0
NW,0.0,0.0,1.0,9.0,4.0,0.0,0.0,0.0,0.0`
d3 = require("d3", "d3-array")
import { freelanceBanner } from "@julesblm/freelance-banner"
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