This interactive scatter plot visualizes the Iris dataset, allowing users to explore relationships between sepal and petal measurements through dropdown menus that dynamically switch the x and y axes. The visualization uses D3 v6 with SVG rendering, featuring animated transitions that smoothly reposition circles and axes over 1000 milliseconds using `selection.join` and `transition`. Data is loaded via `d3.csv` from a GitHub Gist, with size-coded points representing individual flowers.