A reusable D3 scatter plot displays the Iris Dataset, mapping petal width against sepal length and encoding species with distinct SVG symbol shapes from `d3.symbol`. The chart uses `d3.scaleLinear` for axes, `d3.scaleOrdinal` to assign symbols, and `d3.axisLeft`/`d3.axisBottom` for ticks. A `scatterPlot` factory function configures dimensions, margins, and accessors via chained methods, then renders paths using `d3.symbolGenerator`. Data is loaded asynchronously with `d3.csv` from a GitHub Gist, and the plot fills the window with a 24px tick font.