This example visualizes the Iris dataset with a scatter plot, mapping petal length and width on the x- and y-axes while coloring each point by species (setosa, versicolor, and virginica). It uses D3 v6’s `csv`, `scaleLinear`, `extent`, and `axisLeft`/`axisBottom` APIs to load data, position circles, and render axes as SVG, with data sourced from a GitHub-hosted CSV. Colors are assigned via a switch statement, and axis labels are added as SVG text elements.