filter.html

<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>

<input type="range" min="0" max="10" step="0.1" value="6" id="link-filter" style="width: 600px; display: block" />
<svg id="network" width="600" height="380"></svg>

<script type="module">
  /* globals bootstrap */
  import { network } from "https://cdn.jsdelivr.net/npm/@gramex/network@2";
  import { kpartite } from "https://cdn.jsdelivr.net/npm/@gramex/network@2/dist/kpartite.js";
  import * as d3 from "https://cdn.jsdelivr.net/npm/d3@7/+esm";

  // Load the data
  const data = await fetch("country-religion.json").then((r) => r.json());
  const { nodes, links } = kpartite(
    data,
    { country: "Country", religion: "Religion" },
    { count: 1, Population: "Value" },
  );

  function draw() {
    // Filter the data
    const minPopulation = Math.pow(10, document.querySelector("#link-filter").value);
    const filteredLinks = links.filter((d) => d.Population >= minPopulation);
    const filteredNodes = nodes.filter((d) => filteredLinks.some((l) => l.source == d || l.target == d));

    // Create the network
    const graph = network("#network", { nodes: filteredNodes, links: filteredLinks, d3 });

    // Style the network
    const rScale = d3
      .scaleLinear()
      .domain(d3.extent(nodes, (d) => d.Population))
      .range([3, 20]);
    graph.nodes
      .attr("fill", (d) => (d.key == "country" ? "rgba(255,0,0,0.5)" : "rgba(0,0,255,0.5)"))
      .attr("r", (d) => rScale(d.Population))
      .attr("data-bs-toggle", "tooltip")
      .attr("title", (d) => d.value);
    graph.links.attr("stroke", "rgba(0,0,0,0.2)");
  }

  draw();
  document.querySelector("#link-filter").addEventListener("input", draw);
  new bootstrap.Tooltip("#network", { selector: '[data-bs-toggle="tooltip"]' });
</script>