This scatter plot visualizes the Iris dataset, displaying petal width against sepal length for three species, each color-coded via `d3.scaleOrdinal`. Built with D3 v6 and SVG, the chart uses a reusable `scatterPlot` function that scales data with `d3.scaleLinear` and renders axes via `d3.axisLeft` and `d3.axisBottom`. The visualization is responsive, filling the window, and includes custom legend and axis labels.