Fork of Vega-Lite API Template
This example presents a scatter plot of the Auto MPG dataset from the UCI Machine Learning Repository, showing the relationship between miles per gallon and horsepower, with points colored by region of origin. Mouse hover reveals tooltips with vehicle names. The visualization is built using the Vega-Lite API, which encodes the data through `vl.markCircle` and `vl.encode` specifications, with D3.js handling CSV loading via `d3.csv`. The final chart is rendered as SVG through Vega and Vega-Lite, with appearance customized through a shared config object.