This example visualizes the Iris Dataset as a scatter plot, mapping petal width and sepal length. It uses a reusable D3 scatter plot module that applies a linear scale for axes and an ordinal scale to map the three iris species to distinct symbol shapes. The plot draws SVG symbols for each data point and adds left and bottom axes. Data is loaded asynchronously with d3.csv from a remote URL, and the code demonstrates a modular, extensible pattern for building configurable charts.