This example shows a scatter plot of the Iris dataset, comparing sepal length against petal length, with the species of each flower distinguished by different symbols. A shape legend identifies the three species. The visualization uses d3.v7 with functions like `scaleLinear`, `scaleOrdinal`, and `symbol` to map data to positions and shapes, while `axisLeft` and `axisBottom` render the axes. Data is loaded as CSV from a remote GitHub source.