This example shows a scatter plot of the Iris dataset, mapping sepal length to the x-axis and petal length to the y-axis, with different species distinguished by distinct symbol shapes from `d3.symbol`. The visualization uses `d3.scaleLinear` for both axes and `d3.scaleOrdinal` with `symbolsFill` to assign shapes. It loads the data from a remote CSV file using `d3.csvParse` and renders the plot with D3 v7, including axes from the `axes.js` module and a shape legend generated via `d3.symbol`. The SVG fills the browser viewport, with margins and labels configured in the `scatterPlot` function.