{"version":"1.0","type":"rich","title":"Activity6_Task4","description":"A bubble chart visualizes 25 U.S. cities by plotting their population on the x-axis and area in square kilometers on the y-axis, with bubble size encoding GDP and color distinguishing each city. Hovering shows a tooltip with city details. Built with D3 v7, it uses `d3.scaleLinear` for axes and size, `d3.scaleOrdinal` with `d3.interpolateTurbo` for colors, and SVG circles with mouse event handlers. Data comes from `citydata.csv`, rendered as an animated SVG with a legend.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/218427a81fe340d1ba100e3954e27650?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}