This example displays stacked bar charts of university rankings, with each bar segmented by weighted scores for Teaching, Research, Citations, Industry Income, and International Outlook. The visualization uses D3 v6 APIs such as `d3.stack`, `d3.scaleBand`, `d3.scaleLinear`, and SVG rendering to draw the chart. An interactive legend highlights a selected category by adjusting bar opacity on mouseover, while a button triggers data processing from a CSV file. The code loads university data and computes weighted score contributions for each segment.