This scatter plot shows the relationship between sepal length and petal length for Iris flowers, with species distinguished by shape. It uses d3.scaleLinear for the x and y axes, d3.scaleOrdinal with d3.symbolsFill for shape encoding, and d3.axisBottom and d3.axisLeft for labeled axes. The shape legend is rendered via a custom legend function using d3.symbol. Data is loaded from a remote CSV and parsed with d3.csvParse. The visualization is built using d3.v7’s join method for incremental updates.