{"version":"1.0","type":"rich","title":"Blank Canvas","description":"A large, rounded-corner rectangle fills the entire browser viewport, its dimensions set to match the `clientWidth` and `clientHeight` of the document body. This minimal visual canvas is rendered as an SVG `rect` element, created via the D3 v5 `select` API, with an `rx` attribute of 40 to soften its corners. The example demonstrates a blank slate, showing only the foundational shape that could serve as a clipping boundary or backdrop for more complex D3 visualizations. No data or additional marks are present, relying solely on the SVG structure defined in the HTML and JavaScript files.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/40c841411cb749a796695d43cd370d0a?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}