{"version":"1.0","type":"rich","title":"Fork of D3 Implementation first day","description":"This example demonstrates a minimal, full-screen grid of horizontal and vertical stripes that become visible only through two circular windows. Built with D3.js version 7, it uses the `select` API to append SVG elements, `range` to generate 100 coordinates, and iterative `join` operations to create and position the rects. Two SVG masks—one with a central white circle on a black field, the other inverted—define the circular reveal for the horizontal and vertical stripe layers, respectively.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/0cd0953358984c03ba6b3c16df770285?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}