{"version":"1.0","type":"rich","title":"181202_05_Nested circles","description":"A grid of nested circles and rectangles animates into place on an SVG canvas. The visualization builds a parametric layout of 91 cells, each containing concentric circles with decreasing radii and a grey rectangle that expands during the transition. The code uses D3 v5 selection and range modules to generate and position elements, with the `transition().duration()` API animating the circles from the center outward and rectangles from zero size. Hover effects change fill colors to black.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/8740c80d99ed4e86bc22208571cdc81e?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}