This example presents a node-link force-directed graph alongside an adjacency matrix, allowing comparison between the two visual representations. The graph uses d3.forceSimulation, d3.forceLink, and d3.forceManyBody to position nodes and links, while the matrix renders weighted connections as SVG rectangles. Clicking a node or matrix cell highlights corresponding rows, columns, and links in red, with the graph supporting drag-and-drop and zooming via d3.drag and d3.zoom.