This example illustrates a reusable D3.js scatter plot that visualizes the classic Iris dataset, mapping petal width against sepal length and using different symbols to distinguish species. The implementation leverages D3’s `scaleLinear`, `scaleOrdinal`, `axisLeft`, `axisBottom`, and `symbol` APIs to create a flexible, configurable chart component. The code loads data from a remote CSV file, parses numeric fields, and renders the plot as an SVG using a custom `scatterPlot` function with settable properties like margins and symbol size.