This example pairs a force-directed node-link diagram with an adjacency matrix to visualize network connections. The node-link view uses D3’s `forceSimulation`, `forceLink`, and `forceManyBody` to position nodes, while the matrix encodes edge weights as cell opacity. Clicking a node highlights its corresponding row and column in the matrix, and clicking a matrix cell highlights the matching link in the diagram. SVG rendering supports interactive dragging and zooming via D3’s `drag` and `zoom` behaviors.