Notebooks 2.0 is here.
chart = {
const root = tree(d3.hierarchy(data))
const svg = d3.create("svg")
.style("background-color", "#132031");;
// ветки
svg.append("g")
.attr("fill", "none")
.attr("stroke", '#999')
.attr("stroke-opacity", 0.4)
.attr("stroke-width", 1.5)
.selectAll("path")
.data(root.links())
.join("path")
.attr("d", d3.linkRadial()
.angle(d => d.x)
.radius(d => d.y))
.attr("stroke", (d, i) => d.source.data.children[0].color);
// кружки
svg.append("g")
.selectAll("circle")
.data(root.descendants())
.join("circle")
.attr("transform", d => `
rotate(${d.x * 180 / Math.PI - 90})
translate(${d.y},0)
`)
.attr("stroke", '#fff')
.attr("fill", d => d.data.color ? d.data.color : '#fff')
.attr("opacity", '0.6')
.attr("r", d => d.data.children.length ? d.data.children.length * 1.2 : 2);
return svg.attr("viewBox", autoBox).node();
}
function autoBox() {
document.body.appendChild(this);
const {x, y, width, height} = this.getBBox();
document.body.removeChild(this);
return [x, y, width, height];
}
data = generateTree();
generateTree = () => {
const generateChildren = (count, color) => {
return new Array(randomInteger(2, 7))
.fill({children: []})
.map((item, i) => {
if (count === generationCount) {
return {...item, color: i < 7 ? dataColors[i] : dataColors[i % 7]}
}
return {...item, color}
})
.map((item) => ({...item, children: count ? generateChildren(count - 1, item.color) : []}))
}
return {children: generateChildren(generationCount, '')};
}
tree = d3.cluster()
.size([2 * Math.PI, radius])
width = 954
radius = width / 2
generationCount = 4
dataColors = ['#9a5d9a', '#7b69e7', '#6ecf83', '#ed8674', '#e0dc7b', '#ff85bb', '#b75fe1']
d3 = require("d3@5")
randomInteger = (min, max) => {
// случайное число от min до (max+1)
let rand = min + Math.random() * (max + 1 - min);
return Math.floor(rand);
}
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.
