This example displays a scatter plot of the Iris dataset, mapping petal length to the x-axis and sepal length to the y-axis using D3 v6. It fetches the CSV from a GitHub Gist, parses the numeric fields, and creates SVG circles with pixel-based coordinates scaled from the data extents. The visualization fills the browser window, using D3’s `scaleLinear`, `extent`, `csv`, and `select` APIs to handle scaling, data loading, and DOM manipulation.