Bar Chart Race
This animated bar chart race visualizes the changing values of top global brands from 2000 onward, ranking the top 10 by brand value in millions of dollars. The visualization uses D3 v5's data join and transition system with `d3.transition()` and `updateBars` to smoothly interpolate bar positions and heights between yearly keyframes. Each bar is color-coded by brand category (e.g., Technology, Automotive) using `d3.scaleOrdinal` with the Tableau10 scheme. The data comes from Interbrand's annual rankings, loaded via `d3.csv` and processed with `d3.rollup` and `d3.pairs` to create interpolated frames.