This example shows a BMI bar chart with two side-by-side graphs: one displaying BMI values per person, and another comparing Height and Weight as grouped bars. The visualization uses React for component structure and D3 v5 for data parsing via `d3.csv` and scales (`scaleBand`, `scaleLinear`). A CSV from GitHub Gist provides the dataset, which is loaded asynchronously and rendered as SVG with rounded rects, rotated axis labels, and custom axis text.