A scatter plot of the Iris Dataset maps sepal length to petal length, with each of the three species (setosa, versicolor, virginica) encoded by a distinct color from the categorical `d3.scaleOrdinal` scheme. The visualization includes labeled x- and y-axes, a color legend with tick marks for species names, and circular markers rendered as SVG elements. Built with D3.js, the code uses `d3.extent`, `d3.scaleLinear`, and `d3.schemeCategory10` to scale data and colors, while custom modules `axes.js` and `colorLegend.js` construct the coordinate system and legend via selection joins.