A red-green-yellow horizontal bar chart visualizes the 2022 popularity share of programming languages, sourced from a CSV via `d3.csv`. Each bar is encoded using the Vega-Lite API’s `.markBar()`, with x-position sorted descending by share, y-axis representing percentage, and color mapped to language name. The visualization uses `vl.x().fieldN()`, `vl.y().fieldQ()`, and `vl.color().fieldN()` for encoding, with a tooltip on language. The rendered SVG, configured with custom axis and label styles from `config.js`, spans the full window, built with `vega-lite-api` and `vega-tooltip`.