{"version":"1.0","type":"rich","title":"Blank Canvas","description":"A full-screen blank canvas renders as a rounded rectangle filling the browser viewport, with no marks or data. The visualization uses D3 v5’s `select` to target the SVG element and sets its dimensions from the document body’s client width and height, then appends a single `rect` with a 40-pixel corner radius. The fixed-position CSS ensures the canvas remains edge-to-edge regardless of scroll, while the empty SVG plus appended rectangle constitutes the entire graphic.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/be24b7df9265465a8d6b879473a29f58?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}