This example visualizes the relationship between computer price, speed, ads, and screen size from an R dataset loaded via d3.csv. It uses the vega-lite-api to programmatically construct a scatter plot with circular marks, encoding price on the x-axis and speed on the y-axis, while color represents ads and size encodes screen. The visualization renders as SVG through Vega and Vega-Lite, with a custom dark theme config for improved readability and interactive tooltips provided by vega-tooltip.