This interactive scatter plot visualizes the Iris dataset, showing measurements of sepal and petal dimensions. Users can change the attribute mapped to the x-axis via a dropdown menu, while the y-axis remains fixed to sepal width. The visualization is built with React and D3 v5, using `scaleLinear` for axes, `csv` for data loading, and SVG circles for marks. Axes are rendered as separate React components with tick marks and labels, and hovering reveals tooltips.