This scatter plot visualizes the Iris Dataset, showing the relationship between petal length and petal width for three species of iris flowers. Each species is distinguished by color: yellow for setosa, green for versicolor, and purple for virginica. The D3 v6 code loads CSV data from a GitHub gist, uses `scaleLinear`, `extent`, and `axisLeft`/`axisBottom` to map the measurements to screen coordinates, and renders colored SVG circles with a fixed radius. The chart also includes rotated and bottom axis labels for sepal length and petal length.