This example visualizes the Iris Dataset as a scatter plot, mapping sepal length against sepal width. Data points are colored according to the species, with a categorical color legend identifying each group. The visualization uses D3.js `scaleLinear` and `scaleOrdinal` to construct the plot and color assignments, along with `axisBottom` and `axisLeft` for the axes. A custom `colorLegend` component displays the color-to-species mapping, while the data is read from a CSV file.