This gallery example shows a grid of eighteen smiley faces, each rendered with randomized facial features such as eye position, eye radius, mouth width, and stroke thickness. The visualization is built using React components for modular structure, while D3 v5’s `arc` API generates the mouth paths. The faces are drawn as SVG elements, with a yellow background circle, black outline, and simple circular eyes, all positioned relative to a central coordinate system. The data is generated programmatically using D3’s `range` function to create a repeated array of faces.