sunburstFromArray(data, {
label: (n, d) => d.name+': '+n.value, // display text
})
sunburstFromArray = function(array,
{
path, // d=> `a/b/c`,
label = (node, d) => d.name,
width = 800,
height = 800,
radius = 800 / 6,
} = {}){
// Specify the chart’s dimensions.
let hierarchy
if (Array.isArray(array)){
hierarchy = d3.stratify().path(path)(array)
hierarchy.count()
hierarchy.sort((a,b)=>b.value - a.value)
} else {
hierarchy = d3.hierarchy(data)
.sum(d => d.value)
.sort((a, b) => b.value - a.value);
}
// Create the color scale.
const color = d3.scaleOrdinal(d3.quantize(d3.interpolateRainbow, hierarchy.children.length + 1));
// Compute the layout.
const root = d3.partition()
.size([2 * Math.PI, hierarchy.height + 1])
(hierarchy);
root.each(d => d.current = d);
// Create the arc generator.
const arc = d3.arc()
.startAngle(d => d.x0)
.endAngle(d => d.x1)
.padAngle(d => Math.min((d.x1 - d.x0) / 2, 0.005))
.padRadius(radius * 1.5)
.innerRadius(d => d.y0 * radius)
.outerRadius(d => Math.max(d.y0 * radius, d.y1 * radius - 1))
// Create the SVG container.
const svg = d3.create("svg")
.attr("viewBox", [-width / 2, -height / 2, width, width])
.style("font", "10px sans-serif")
.style('width', width)
.style('height', height);
// Append the arcs.
const _path = svg.append("g")
.selectAll("path")
.data(root.descendants().slice(1))
.join("path")
.attr("fill", d => { while (d.depth > 1) d = d.parent; return color(d.data ? label(d, d.data) : d.id.match(/[^/]+$/)); })
.attr("fill-opacity", d => arcVisible(d.current) ? (d.children ? 0.6 : 0.4) : 0)
.attr("pointer-events", d => arcVisible(d.current) ? "auto" : "none")
.attr("d", d => arc(d.current));
// Make them clickable if they have children.
_path.filter(d => d.children)
.style("cursor", "pointer")
.on("click", clicked);
const format = d3.format(",d");
_path.append("title")
.text(d => `${d.ancestors().map(d => d.data ? label(d, d.data) : d.id.match(/[^/]+$/)).reverse().join("/")}\n${format(d.value)}`);
const _label = svg.append("g")
.attr("pointer-events", "none")
.attr("text-anchor", "middle")
.style("user-select", "none")
.selectAll("text")
.data(root.descendants().slice(1))
.join("text")
.attr("dy", "0.35em")
.style("font-size", "1em")
.attr("fill-opacity", d => +labelVisible(d.current))
.attr("transform", d => labelTransform(d.current))
.text(d => d.data ? label(d, d.data) : d.id.match(/[^/]+$/)+': '+d.value);
const parent = svg.append("circle")
.datum(root)
.attr("r", radius)
.attr("fill", "none")
.attr("pointer-events", "all")
.on("click", clicked);
// Handle zoom on click.
function clicked(event, p) {
parent.datum(p.parent || root);
root.each(d => d.target = {
x0: Math.max(0, Math.min(1, (d.x0 - p.x0) / (p.x1 - p.x0))) * 2 * Math.PI,
x1: Math.max(0, Math.min(1, (d.x1 - p.x0) / (p.x1 - p.x0))) * 2 * Math.PI,
y0: Math.max(0, d.y0 - p.depth),
y1: Math.max(0, d.y1 - p.depth)
});
const t = svg.transition().duration(750);
// Transition the data on all arcs, even the ones that aren’t visible,
// so that if this transition is interrupted, entering arcs will start
// the next transition from the desired position.
_path.transition(t)
.tween("data", d => {
const i = d3.interpolate(d.current, d.target);
return t => d.current = i(t);
})
.filter(function(d) {
return +this.getAttribute("fill-opacity") || arcVisible(d.target);
})
.attr("fill-opacity", d => arcVisible(d.target) ? (d.children ? 0.6 : 0.4) : 0)
.attr("pointer-events", d => arcVisible(d.target) ? "auto" : "none")
.attrTween("d", d => () => arc(d.current));
_label.filter(function(d) {
return +this.getAttribute("fill-opacity") || labelVisible(d.target);
}).transition(t)
.attr("fill-opacity", d => +labelVisible(d.target))
.attrTween("transform", d => () => labelTransform(d.current));
}
function arcVisible(d) {
return d.y1 <= 3 && d.y0 >= 1 && d.x1 > d.x0;
}
function labelVisible(d) {
return d.y1 <= 3 && d.y0 >= 1 && (d.y1 - d.y0) * (d.x1 - d.x0) > 0.03;
}
function labelTransform(d) {
const x = (d.x0 + d.x1) / 2 * 180 / Math.PI;
const y = (d.y0 + d.y1) / 2 * radius;
return `rotate(${x - 90}) translate(${y},0) rotate(${x < 180 ? 0 : 180})`;
}
return svg.node();
}
data = FileAttachment("flare-2.json").json()
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