This example visualizes the Iris dataset as a scatter plot, mapping petal length and width to the x- and y-axes while coloring each point by species (setosa, versicolor, or virginica) using skyblue, lightgreen, or orange. The plot is rendered as SVG circles using D3 v6, with data loaded via `d3.csv` from a remote GitHub URL and scaled using `scaleLinear`. Axes are drawn with `axisLeft` and `axisBottom`, and the chart fills the browser window with fixed margins and a red title.