This scatter plot visualizes the Iris dataset, mapping petal length and width as the primary x and y coordinates while encoding sepal dimensions as elliptical radii. Data is loaded from a GitHub CSV via `d3.csv` and parsed before scaling with `d3.scaleLinear` and `d3.extent`. The SVG canvas renders colored circles per species using a switch-based color marker, with axes generated via `d3.axisLeft` and `d3.axisBottom`. The chart fills the window, with labeled axes and a rotated y-axis title displayed in green.