This interactive scatter plot visualizes the Iris flower dataset, showing petal length against sepal width. Each point is colored by species using a categorical color scale, and hovering reveals a tooltip with the formatted petal length. Built with React and D3 v5, the visualization uses React components for axes and marks, with D3's `scaleLinear` and `scaleOrdinal` for positioning and coloring. SVG rendering handles the circles, while a custom tick formatter appends units to axis labels.