{"version":"1.0","type":"rich","title":"Activity8tutorial1","description":"A horizontal bar chart displays population estimates for 30 countries in 2020, sourced from a CSV file loaded via `d3.csv`. The React-based visualization uses `d3.scaleBand` for the categorical y-axis and `d3.scaleLinear` for the numeric x-axis, with SVG rectangles rendered by the `Marks` component. Axes are built with custom `AxisBottom` and `AxisLeft` components, and tooltips use the native SVG `<title>` element. The x-axis labels are formatted using `d3.format` to abbreviate large numbers, converting 'G' to 'B' for billions.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/0dac3d5ae6e840dd89d7c4a1526ef11b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}