{"version":"1.0","type":"rich","title":"Blank Canvas","description":"A blank SVG canvas fills the browser window, rendered as a single rounded rectangle that adapts to the viewport dimensions. The example demonstrates a minimal D3 setup where `d3.select` attaches to the `svg` element, and the viewport size is read from `document.body.clientWidth` and `document.body.clientHeight`. Using d3.v5, the code appends a `rect` with a 40-pixel corner radius, while the CSS hides any page overflow. No data or interactive behavior is present; the piece simply shows the initial scaffolding for a charting project.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/dd873372890f461b9b1b43ffb338296e?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}