{"version":"1.0","type":"rich","title":"Untitled","description":"A red circle sits at the center of a full-window SVG canvas. When the mouse enters the circle, a green circle and a black circle appear on top of it, and the red circle transitions its radius to 100 with a 750ms duration. On mouse leave, the circle returns to a radius of 40 and its red fill over 500ms. The example uses D3 v7 to append SVG elements and the `transition` API for animation, while `d3.interpolateRound` is called to compute a rounded interpolation value.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/d2c2f6c52cf54f40b2e265eec79b5608?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}