{"version":"1.0","type":"rich","title":"data visualization bubble chart ","description":"This example visualizes COVID-19 cases, deaths, and population across countries using a bubble chart. Each bubble’s position maps total cases on the x-axis and total deaths on the y-axis, while bubble radius encodes population via a square-root scale. The chart is rendered in SVG using D3 v7, with linear scales, axis generators, and a legend showing population magnitude. Data is loaded asynchronously from a remote CSV file using `d3.csv`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/fe5bab827e4d4d4097acb0c29eaad754?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}