This visualization pairs a force-directed node-link diagram with an adjacency matrix for a Dublin contact network. Using `d3.forceSimulation`, `d3.forceLink`, `d3.forceManyBody`, and `d3.forceCenter`, it simulates node physics, while the matrix encodes link weights as cell opacity. Clicking a node or matrix cell highlights its row and column, and interactions support drag-and-drop and zoom via `d3.zoom` and custom drag handlers. Data comes from an edge list of weighted connections, rendered as SVG circles and lines.