{"version":"1.0","type":"rich","title":"Clickable Circles with D3 and React","description":"A grid of pastel-colored circles, each positioned by explicit pixel coordinates from a static data array, fills the visualization. React manages the application state while D3's `select` and `join` methods render the SVG `<circle>` elements. Hovering a circle triggers a `mouseover` event that calls `setSelectedId`, updating React state and re-running the D3 selection to draw a black stroke around the active circle, while `mouseout` clears the highlight.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/af8d895916e8464c931fd0e3b8c36129?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}