This example demonstrates a bubble chart that visualizes the relationship between the sweetness, sourness, and size of various fruits. The chart encodes sweetness on the x-axis, sourness on the y-axis, and size as the radius of each circle, with colors distinguishing fruit types. The data is loaded from a local CSV file, and the visualization is built using D3 v7 with SVG rendering. The code employs D3 scales for positioning and sizing, along with axis generators and a custom legend.