D3

Thanks to community member Josiah Solomon for the provided solution.

Use the following external D3 libraries:

https://esm.sh/d3@7.9.0

https://esm.sh/d3-hexbin

Note
Grafana edit mode might prevent displaying D3 charts. Save your changes and check the result on the dashboard.

D3 hexbin chart displayed using the Business Text panel.

Code to copy

Into the Content or Default Content:

<svg id="hexbin-container" width="800" height="600"></svg>

After Content Ready

Warning
Plug-in libraries may change their versions and the code in the example may not work or cause an error.

Into the JavaScript > After Content Ready:

import("https://esm.sh/d3@7.9.0").then(async (d3) => {
  await import("https://esm.sh/d3-hexbin").then(async (d3Hexbin) => {
    // Set up dimensions
    const width = 800;
    const height = 600;

    // Create the SVG container
    const svg = d3
      .select("#hexbin-container")
      .attr("width", width)
      .attr("height", height);
    console.log("svg", svg);

    // Generate random data for demonstration (e.g., random points)
    const points = d3
      .range(1000)
      .map(() => [Math.random() * width, Math.random() * height]);

    // Create a hexbin layout
    const hexbin = d3Hexbin
      .hexbin()
      .radius(20) // Size of the hexagon
      .x((d) => d[0]) // X-coordinate of the point
      .y((d) => d[1]); // Y-coordinate of the point

    // Compute the hexbin clusters
    const hexbins = hexbin(points);

    // Create a color scale for the hexagons based on the number of points in each bin
    const color = d3
      .scaleSequential(d3.interpolateBlues)
      .domain([0, d3.max(hexbins, (d) => d.length)]);

    // Create the hexbin path and append it to the SVG
    svg
      .selectAll(".hexbin")
      .data(hexbins)
      .enter()
      .append("path")
      .attr("class", "hexbin")
      .attr("d", hexbin.hexagon())
      .attr("transform", (d) => `translate(${d.x},${d.y})`)
      .style("fill", (d) => color(d.length))
      .style("stroke", "#fff")
      .style("stroke-width", "1px");
  });
});