This example visualizes the Iris Dataset as an interactive scatter plot, mapping petal width to the x-axis and sepal length to the y-axis. It uses three distinct D3 symbol shapes to differentiate iris species, rendering each data point as an SVG path element. The implementation leverages reusable D3 modules including `scaleLinear`, `scaleOrdinal`, `axisBottom`, `axisLeft`, `symbols`, and `symbol`, with data loaded asynchronously via `csv`. The chart fills the entire browser window, with axes labeled and styled through CSS.