{"version":"1.0","type":"rich","title":"Task8 T4","description":"This bubble chart plots U.S. cities by population density on the x-axis and land area on the y-axis. Each bubble’s size encodes the product of these two variables, representing total population, with a legend showing bubble-size equivalents for specific density values. Built with D3.js v7, it uses `d3.scaleLinear` for both axes, `d3.scaleSqrt` for bubble radius, and `d3.axisBottom` and `d3.axisLeft` to render tick marks. The visualization displays city names via hover effects, with a static CSV data source.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/5caa3b9cbc6942f2bd164d3d1ffd955b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}