This treemap visualizes the hierarchical structure of the Flare dataset, with each leaf node represented as a rectangle sized by its numeric value and colored by its top-level category. A dropdown menu above the chart lets users dynamically switch between five tiling algorithms for the treemap layout. The example uses the `d3_hierarchy` treemap API, setting the tile method based on the selected option, and renders the result as SVG using `d3.csv` to load the data from flare.csv.