chart = {
const links = data.links.map(d => Object.create(d));
const nodes = data.nodes.map(d => Object.create(d));
const simulation = d3.forceSimulation(nodes)
.force("link", d3.forceLink(links).id(d => d.id))
.force("charge", d3.forceManyBody().strength(-100))
.force("collide", d3.forceCollide(function (d) { return nodeRadiusScale(d.value) }))
.force("center", d3.forceCenter(width / 2, height / 2));
const svg = d3.create("svg")
.attr("viewBox", [0, 0, width, height]);
const link = svg.append("g")
.attr("stroke", "#999")
.attr("stroke-opacity", 0.6)
.selectAll("line")
.data(links)
.join("line")
.attr("stroke-width", d => Math.sqrt(d.value));
const nodeG = svg.append("g")
.attr("stroke", "#fff")
.attr("stroke-width", 1.5)
.selectAll("g")
.data(nodes)
.join("g")
.call(drag(simulation))
nodeG.append('circle')
.attr("r", d => nodeRadiusScale(d.value))
.attr("fill", color)
nodeG.append('g')
.each(function (d) {
drawHexagons(
d3.select(this),
[{ key: d.id, values: d.value }],
{
width: nodeRadiusScale(d.value),
height: nodeRadiusScale(d.value),
nodeColor: 'white',
borderColor: 'black',
nodeTextColor: 'black',
}
)
})
simulation.on("tick", () => {
link
.attr("x1", d => d.source.x)
.attr("y1", d => d.source.y)
.attr("x2", d => d.target.x)
.attr("y2", d => d.target.y);
nodeG.attr("transform", d => `translate(${d.x}, ${d.y})`)
});
invalidation.then(() => simulation.stop());
return svg.node();
}
data = FileAttachment("miserables.json").json()
data['nodes'].forEach((d,i)=>{
d.value = Math.floor(Math.random() * 5)
})
height = 600
color = {
const scale = d3.scaleOrdinal(d3.schemeCategory10);
return d => scale(d.group);
}
nodeRadiusScale = d3.scaleSqrt().domain([0, 50]).range([10, 50])
drag = simulation => {
function dragstarted(d) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}
function dragged(d) {
d.fx = d3.event.x;
d.fy = d3.event.y;
}
function dragended(d) {
if (!d3.event.active) simulation.alphaTarget(0);
d.fx = null;
d.fy = null;
}
return d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended);
}
function drawHexagons(nodeElement, parentIds, options) {
const nodeColor = options.nodeColor
const borderColor = options.borderColor
const nodeTextColor = options.nodeTextColor
const width = options.width
const height = options.height
const data = getData(parentIds, width * 2, height * 2)
const SQRT3 = Math.sqrt(3)
const hexagonPoly = [
[0, -1],
[SQRT3 / 2, 0.5],
[0, 1],
[-SQRT3 / 2, 0.5],
[-SQRT3 / 2, -0.5],
[0, -1],
[SQRT3 / 2, -0.5],
]
function generateHexagon(hexRadius) {
const hexagonPath =
"m" +
hexagonPoly
.map(function (p) {
return [p[0] * hexRadius, p[1] * hexRadius].join(",")
})
.join("l") +
"z"
return hexagonPath
}
const node = nodeElement.insert("g")
const nodeData = node.selectAll("g").data(data)
const nodesEnter = nodeData
.enter()
.append("g")
.attr("id", (d, i) => "node-group-" + i)
.attr("transform", (d) => `translate(${d.x - width},${d.y - height})`)
nodesEnter
.filter((d) => d.height === 0)
.append("path")
.attr("class", "node pie")
.attr("d", (d) => generateHexagon(d.r + 2))
.attr("stroke", borderColor)
.attr("stroke-width", 1)
.attr("fill", "white")
//nodesEnter
//.filter((d) => d.height === 0)
//.append("text")
//.attr("fill", nodeTextColor)
//.attr("font-size", "0.6em")
//.attr("text-anchor", "middle")
//.attr("alignment-baseline", "middle")
//.text('Label')
}
function getData(parentIDs, width, height) {
var rawData = []
rawData.push({ id: "root" })
parentIDs.forEach((d) => {
rawData.push({ id: d.key, parentId: "root", size: d.values })
d3.range(0, d.values).forEach((el) => {
rawData.push({
id: el,
parentId: d.key,
size: 1
})
})
})
const vData = d3.stratify()(rawData)
const vLayout = d3.pack().size([width, height]).padding(10)
const vRoot = d3.hierarchy(vData).sum(function (d) {
return d.data.size
})
const vNodes = vLayout(vRoot)
const data = vNodes.descendants().slice(1)
return data
}
d3 = require("d3@5")
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