{"version":"1.0","type":"rich","title":"Learn to draw smile with d3","description":"An animated smiley face drawn with SVG demonstrates reusable D3 features. Yellow circle, black-outlined head, and eyes are static shapes, while the eyebrows animate through chained `transition.attr` calls that move them up and down over 500ms intervals. The mouth uses the `d3.arc` generator, with a semicircular path defined by inner/outer radii and start/end angles. Coordinates rely on explicit SVG attributes, and the face is centered via a `translate` transform on a group element.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/3a483fa180c44cec93adff4e86518b04?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}