{"version":"1.0","type":"rich","title":"Vizhub leson 1 TCB","description":"This example demonstrates static SVG shapes—a brown rectangle and four nested concentric circles in red, yellow, purple, and blue—rendered inside a fixed 500×500 viewport. It also loads D3 via UNPKG and uses the `import { select } from 'd3'` statement to select a `#message` div, whose text is set to a string imported from a local ES6 module. The code highlights D3’s data binding and module integration without interactive behavior or external data sources.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/169e0e3bb5b14fd281b60dca3ac16728?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}