This scatter plot displays sepal length against petal length for Iris flowers, with species encoded by distinct marker shapes. The visualization uses d3.scaleLinear for both axes and d3.scaleOrdinal with d3.symbolsFill to map species to shapes. A custom shapeLegend component draws the legend using d3.symbol to generate the path data. The visualization loads data from an external iris.csv file, parses it with d3.csvParse, and renders the marks as SVG paths via d3.join, with complete axes and labels provided by d3.axisLeft and d3.axisBottom.