This example presents the classic Iris dataset on a scatter plot, cycling through different measurement combinations as the x-axis every three seconds. Built with D3 v6, it uses `scaleLinear`, `axisLeft`, and `axisBottom` to render axes, while the `selection.join` pattern animates circle transitions using `transition().duration(1000)`. The visualization highlights reusable chart architecture, with the SVG rendering responding to dynamic data updates.