{"version":"1.0","type":"rich","title":"d3 course 1","description":"This example renders a cartoon smiley face using D3.js v7 within an SVG canvas. The face is built from basic shapes—a yellow circle, black eyes, eyebrows, and an arc-based mouth—all positioned relative to the SVG's center. An animated transition moves the eyebrows vertically in a two-step sequence, using `transition().duration()` to create a blinking effect. The code imports `select` and `arc` from D3, and leverages SVG attributes like `cx`, `cy`, and `d` to construct the visual.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e768a87e19e941e8b32f8fe36b1fd441?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}