run2-d3-bubble-chart

name	run2_d3-bubble-chart
description	Implementing force-directed bubble charts with category clustering and tooltips.

Advanced Bubble Charts with Clustering

Use d3.forceX and forceY with scale mapping for sector clustering.

const sectorX = d3.scalePoint().domain(sectors).range([width/4, 3*width/4]);

simulation.force("x", d3.forceX(d => sectorX(d.sector)).strength(0.1));

Tooltip handling:

node.on("mouseover", (event, d) => {
    // Show tooltip div
});