This scatter plot visualizes the Iris dataset, showing Petal Length and Petal Width for each sample. The SVG circles are colored by species: blue for setosa, yellow for versicolor, and red for virginica. The code uses D3 v6 APIs including `csv`, `select`, `scaleLinear`, `extent`, `axisLeft`, and `axisBottom`. Additionally, it computes separate radius values based on sepal dimensions, though the circles uniformly use a fixed radius of 5 pixels. The chart includes custom axis labels and is rendered responsively to the browser window size.