{"version":"1.0","type":"rich","title":"Tutorial 4","description":"This tutorial demonstrates a bubble chart that visualizes the correlation between average horsepower, torque, and highway MPG across different car manufacturers. Each bubble’s position encodes horsepower and torque on the x- and y-axes, while its size reflects highway MPG and its color represents the car make. The visualization includes interactive tooltips on mouseover, a legend for bubble size, and color-coded categories. Built with D3 v7, it uses `d3.csv` to load data, `d3.scaleLinear` for axes and sizing, `d3.scaleOrdinal` for colors, and SVG rendering with animated tooltip transitions.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/fc82aeeb43da448b841b72b608fb158d?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}