A force-directed graph visualizes node-link relationships alongside an adjacency matrix, with both views linked by highlighting a selected node’s row and column on hover or click. The SVG rendering uses `d3.forceSimulation` with `forceLink`, `forceManyBody`, and `forceCenter` to position nodes, while `d3.drag` enables interactive repositioning and `d3.zoom` supports scaling. Links are colored by group, and matrix cells reflect edge weights via fill opacity, with data loaded from CSV text.