This example visualizes the Iris dataset as a scatter plot, mapping petal length and width as the primary x and y axes while also encoding sepal dimensions as circle radius properties. The plot uses colored circles—sky blue for setosa, light green for versicolor, and orange for virginica—to distinguish species. Built with D3 v6, the code loads CSV data from a GitHub repository, applies linear scales via `scaleLinear` and `extent`, and renders SVG circles with appended axis labels and tick marks. The visualization clearly shows clustering patterns among the three Iris species based on their morphological measurements.