{"version":"1.0","type":"rich","title":"Fork of D3 Starter","description":"This example shows a grid of horizontal and vertical stripes across the full viewport, with a circular region at the center appearing brighter against the surrounding dark mask. The code uses D3 v7 selections to append two groups of rectangles, each generated from a `range(100)` data array, and assigns SVG masks to each group. The first mask contains a black rect with a white circle, while the second uses inverse colors, creating the overlapping visual effect.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"","width":960,"height":500,"cache_age":3600}