This scatter plot visualizes the Iris dataset, mapping petal width to sepal length and encoding species membership with red, violet, and orange markers. The D3.js v6 code loads CSV data from a GitHub gist, using `scaleLinear` for axes, `scaleOrdinal` for symbol types, and custom fill colors assigned per species. SVG rendering displays circular marks with translations for each data point, while the `scatterPlot` module wraps reusable axis and mark-generation logic.