This example presents the classic Iris dataset as a reusable D3 scatter plot, mapping petal width to the x-axis and sepal length to the y-axis. Different species are distinguished through distinct SVG symbols, generated using D3’s `symbol` and `scaleOrdinal`. The visualization is built with a reusable `scatterPlot` function, which configures linear scales, axes, margins, and symbol size. Data is loaded as CSV via D3’s `csv` method, and the plot updates the DOM by joining path elements. The output is a clean, interactive-free scatter chart rendered as SVG.