This example demonstrates how to load and summarize CSV data in a React application using D3. It shows a text display that reports the dataset’s size in kilobytes, row count, and column count. The code uses `d3.csv` to fetch the data from a GitHub gist, React’s `useState` and `useEffect` hooks to manage state, and `d3.csvFormat` to calculate the data size. The visualization is minimal, presenting the summary as a large preformatted text element.