This reusable scatter plot animates through the Iris dataset, cycling the x-axis through petal width, sepal width, petal length, and sepal length while keeping sepal length on the y-axis. It colors data points by species (setosa, versicolor, virginica) with a custom legend and rotating axis labels. Built with D3 v6, it uses `scaleLinear`, `axisLeft`, and `axisBottom` to render SVG circles and axes. The animation uses `setInterval` to update the plot’s x-value binding, demonstrating a modular `scatterPlot` chart factory.