{"version":"1.0","type":"rich","title":"Fork of HTML Starter","description":"This example shows the top 12 countries by total capital-city population, aggregated from four data parts and displayed as a sorted bar chart. It uses D3 v7 APIs including `d3.tsv` to load tabular data, `d3.rollups` to group rows by country and sum their population values, and `d3.scaleBand`/`d3.scaleLinear` for the axes. SVG rectangles render the bars, with value labels and a title/subtitle, all within an 900×520 viewport. The chart is built with a single blue color (`#3b82f6`) and includes tooltips via appended `title` elements.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/f22a76c3948b43709d09b23560f051bd?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}