This example displays the Iris dataset as an SVG scatter plot, coloring each point by species (skyblue, lightgreen, or orange) and mapping petal length and petal width to the x- and y-axes. It uses d3.csv to load the data, d3.scaleLinear and d3.extent for scales, and d3.axisLeft/axisBottom for labeled axes. The code appends circles via d3.selectAll().data().join(), setting separate radii and positions, though the mark also stores sepal dimensions without plotting them. The visualization fills the browser window, with green axis labels for petal length and sepal length.