This co-occurrence matrix visualizes the relationships between academic programs, with cells colored by category and sized by link weight. The visualization uses an interactive SVG heatmap where users can reorder rows and columns by name, count, or group via a dropdown menu. Built with D3 v5, the code employs `d3.scaleBand`, `d3.scaleLinear`, and `d3.scaleOrdinal` to map data, while transitions animate the reordering over 2 seconds. A tooltip provides details on hover, and the matrix reads from a JSON file containing nodes and links.