chart = {
const root = pack(data);
console.log(root)
let focus = root;
let view;
const svg = d3.select(DOM.svg(width, height))
.attr("viewBox", `-${width / 2} -${height / 2} ${width} ${height}`)
.style("display", "block")
.style("margin", "0 -14px")
.style("width", "calc(100% + 28px)")
.style("height", "auto")
.style("background", "transparent")
.style("cursor", "pointer")
.on("click", () => zoom(root));
var defs = svg.append("defs");
var gradient = defs.append("linearGradient")
.attr("id", "svgGradient")
.attr("x1", "0%")
.attr("x2", "100%")
.attr("y1", "0%")
.attr("y2", "100%");
gradient.append("stop")
.attr('class', 'start')
.attr("offset", "0%")
.attr("stop-color", "red")
.attr("stop-opacity", 0.9);
gradient.append("stop")
.attr('class', 'end')
.attr("offset", "100%")
.attr("stop-color", "blue")
.attr("stop-opacity", 0.9);
const node = svg.append("g")
.selectAll("circle")
.data(root.descendants().slice(1).map((x)=>{console.log(x);return x;})
.sort((a, b) => (b.depth- a.depth) || (b.value - a.value)))
.enter().append("circle")
.attr("fill", d => "url(#svgGradient)" )
//.attr("fill", d => d.children ? "url(#svgGradient)"color(d.depth) : "white")
.style("fill-opacity", d => d.parent === root ? 0.5: 1 )
.attr("pointer-events", d => !d.children ? "none" : null)
.on("mouseover", function() { d3.select(this).attr("stroke", "#000"); })
.on("mouseout", function() { d3.select(this).attr("stroke", null); })
.on("click", d => focus !== d && (zoom(d), d3.event.stopPropagation()));
const label = svg.append("g")
.style("font", "10px sans-serif")
.attr("pointer-events", "none")
.attr("text-anchor", "middle")
.selectAll("text")
.data(root.descendants())
.enter().append("text")
.style("fill-opacity", d => d.parent === root ? 1 : 0)
.style("display", d => d.parent === root ? "inline" : "none")
.text(d => d.data.name);
zoomTo([root.x, root.y, root.r * 2]);
function zoomTo(v) {
const k = width / v[2];
view = v;
label.attr("transform", d => `translate(${(d.x - v[0]) * k},${(d.y - v[1]) * k})`);
node.attr("transform", d => `translate(${(d.x - v[0]) * k},${(d.y - v[1]) * k})`);
node.attr("r", d => d.r * k);
}
function zoom(d) {
const focus0 = focus;
focus = d;
const transition = svg.transition()
.duration(d3.event.altKey ? 7500 : 750)
.tween("zoom", d => {
const i = d3.interpolateZoom(view, [focus.x, focus.y, focus.r * 2]);
return t => zoomTo(i(t));
});
node
.filter(function(d) { return d.parent === focus || d===focus})// this.style.display === "inline"; })
.transition(transition)
.style("fill-opacity", d => d.parent === focus ? 1 : 0)
.on("start", function(d) { if (d.parent === focus) this.style.display = "inline"; })
.on("end", function(d) { if (d.parent !== focus) this.style.display = "none"; });
label
.filter(function(d) { return d.parent === focus || this.style.display === "inline"; })
.transition(transition)
.style("fill-opacity", d => d.parent === focus ? 1 : 0)
.on("start", function(d) { if (d.parent === focus) this.style.display = "inline"; })
.on("end", function(d) { if (d.parent !== focus) this.style.display = "none"; });
}
return svg.node();
}
data = require("@observablehq/flare")
pack = data => d3.pack()
.size([width, height])
.padding(3)
(d3.hierarchy(data)
.sum(d => {
console.log("dddd",d)
return d.size
})
.sort((a, b) => (a.depth- b.depth) || (b.value - a.value)))
width = 932
height = width
format = d3.format(",d")
color = d3.scaleLinear()
.domain([0, 5])
.range(["hsl(152,80%,80%)", "hsl(228,30%,40%)"])
.interpolate(d3.interpolateHcl)
d3 = require("d3@5")
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.
