This example visualizes temperature fluctuations over time using a Vega-Lite area chart, with data sourced from a CSV of weekly San Francisco temperatures. The visualization loads data via D3’s `csv` method and constructs the chart programmatically using the `vega-lite-api` library, registering it with Vega and Vega-Lite. The chart encodes time on the x-axis and quantitative temperature values on the y-axis, with a tooltip displaying the temperature. Custom styling through a `config` object adjusts axis labels, titles, and colors, while the rendering is handled as an SVG via Vega’s view renderer.