{"version":"1.0","type":"rich","title":"practice","description":"This example creates a simple bar chart with D3.js v6, rendering a single black rectangle onto an SVG canvas. The chart positions the rectangle at a fixed x-coordinate of 10 and y-coordinate of 20, with a width of 10 pixels and a height of 300 pixels. The code uses D3's `select` function to append the SVG element to the document body, and sets the SVG dimensions to match the browser window’s width and height. The visualization serves as a minimal practice exercise, demonstrating basic SVG shape creation and attribute manipulation without any data binding.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/7a359bf4b6b8482f880046f76db01b8f?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}