This interactive scatter plot visualizes the Iris flower dataset, displaying measurements of sepal and petal dimensions. Users can dynamically select which measurement appears on the X or Y axis via radio buttons. The visualization encodes the three Iris species—setosa, versicolor, and virginica—using semi-transparent red, green, and blue colors. Built with D3 v4, the plot uses `d3.scaleLinear` for axes, `d3.scaleOrdinal` for color mapping, and re-renders the SVG plot on each axis change.