This scatter plot visualizes the Iris dataset, showing sepal length against petal length, with each point’s shape encoding the species. A shape legend identifies the three species categories. The visualization is built with D3 v7, using d3.scaleLinear for the axes, d3.scaleOrdinal with d3.symbolsFill to map species to shapes, and custom modules for rendering axes and the legend. Data is loaded as CSV and parsed with d3.csvParse.