This example reproduces a Sol LeWitt-inspired geometric composition using D3.js, displaying a grid of horizontal bars that form a circular cutout in the center. The visualization shows 100 thin, full-width rectangles stacked vertically across the screen, with a circular mask applied to create a negative-space circle in the middle of the canvas. The code leverages D3’s `select`, `range`, and data-join methods to generate the SVG rectangles, while an SVG `<mask>` element containing a black rectangle and white circle defines the visible region. The rendering uses the D3 v7 library and outputs vector-based SVG graphics that fill the entire browser viewport.