This example shows an interactive scatter plot of the Iris dataset, rendered as SVG shapes whose positions map petal length and sepal length. It uses D3’s `scaleLinear`, `scaleOrdinal`, `axisLeft`, `axisBottom`, and `symbol` APIs to draw symbols with a specified radius. The code loads CSV data from a GitHub gist via `d3.csv`, parses numeric columns, and creates a reusable scatter plot function that joins data to path elements. Styling includes large tick labels and a full-viewport layout.