{"version":"1.0","type":"rich","title":"Ep21 United Nations Bar Chart","description":"This example displays a horizontal bar chart of the ten most populous countries in 2020, using data loaded from a CSV file of United Nations population estimates. The chart uses SVG rectangles, with each bar’s width scaled by population via `d3.scaleLinear` and its vertical position determined by `d3.scaleBand` based on country name. React manages the data-fetching state through a `useState` hook and `useEffect`, while `d3.csv` asynchronously loads and parses the dataset. The visualization updates only once when the component mounts, rendering a static comparison of national population sizes.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/bec889b7bbc04ca58ee3a95745aede52?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}