This interactive D3.js (v6) scatter plot visualizes the classic Iris dataset, mapping petal length and width to the x and y axes. Points are color-coded by species, with setosa, versicolor, and virginica rendered in blue, red, and black respectively. The SVG rendering uses d3.scaleLinear for axes, d3.extent for domain calculation, and d3.axisLeft and d3.axisBottom for tick marks. The code loads data via d3.csv from a GitHub gist, parsing numeric fields, and draws circles with a fixed radius, while also storing sepal dimensions as unused properties on each mark.