This example shows the classic Iris dataset as a scatter plot of sepal length against petal length, with each species distinguished by a different symbol shape. A legend maps the species names to their corresponding shapes. The visualization is built with D3 v7, using scales like `scaleLinear` and `scaleOrdinal` along with `symbolGenerator` for shape rendering. The axes are drawn via `axisLeft` and `axisBottom`, and the data is loaded from a remote CSV file using `csvParse`.