{"version":"1.0","type":"rich","title":"area chart countries and GDP ","description":"This area chart displays the average petal length for different flower species, using a green line and translucent fill to highlight the trend across species. The visualization is built with D3.js v7 and renders as an SVG. It loads a CSV dataset, calculates group means with `d3.rollups` and `d3.mean`, then draws the area, line, and data points. Axes are scaled with `d3.scaleBand` and `d3.scaleLinear`, and annotations are added via SVG text elements.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6e61cb0b619349b89c6844ed2405e2df?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}