{"version":"1.0","type":"rich","title":"D3 spinner","description":"This example shows a minimalist loading spinner rendered as a single animated arc that rotates continuously around a circular track on a pale green background. The animation uses D3 transitions with a 20-second duration, where `transition.attrTween` interpolates the arc’s `endAngle` from 0 to 2π, and an `on(\"end\")` callback restarts the spin indefinitely. The code builds the shape with `d3.arc()`, setting outer and inner radii relative to the container size, and positions it via an SVG `<g>` transform.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/95e7000cdaa94b14a88459685d09e221?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}