This scatter plot visualizes the Iris dataset, showing the relationship between sepal length and petal length, with species distinguished by different fill symbols. The visualization uses D3 v7 to map species to a categorical shape scale with symbols from `symbolsFill`, rendering each data point as a path mark positioned via linear scales. Species categories are identified through a custom shape legend, and the plot includes labeled axes. The iris data is loaded from a remote CSV file using `csvParse` and rendered with D3's `symbol` and `scaleOrdinal` APIs.