This example visualizes the Iris dataset as a scatter plot, showing the relationship between petal length and width for three flower species, with each species color-coded (skyblue, lightgreen, orange). The code uses D3 v6 APIs including `scaleLinear`, `extent`, `axisLeft`, and `axisBottom` to create an SVG chart. It loads CSV data asynchronously via `d3.csv`, maps data points to circle elements using `join('circle')`, and labels axes with rotated text. The plot fills the full browser window, with axes positioned according to specified margins.