This visualization shows a scatter plot of Iris flower measurements, plotting sepal length against petal length. Each point represents a flower sample, with the species encoded by different symbol shapes (circles, crosses, and other D3 symbol types) and displayed alongside a shape legend. The plot uses D3 v7’s `scaleLinear`, `scaleOrdinal`, `symbolGenerator`, and `axisLeft`/`axisBottom` APIs, with data loaded asynchronously from a CSV file and parsed via `csvParse`. Specific visual encodings include x/y axes, axis labels, and a custom legend built with D3’s selection join pattern.