This example renders a scatter plot of the Iris dataset, showing the relationship between sepal length and petal length while using different point shapes to distinguish the three species. The plot is built with d3.v7, using `scaleLinear` for axes, `scaleOrdinal` with `symbolsFill` to map species to shapes, and `symbol` to generate the SVG path marks. The visualization is interactive, adapting to the window size, and fetches the raw `iris.csv` file from GitHub to parse and display the data.