An animated scatter plot of the Iris dataset cycles through four flower measurements on the x-axis while keeping petal width fixed on the y-axis. The visualization uses D3 v6’s `selectAll`, `data`, `join`, and `scaleLinear` to render SVG circles colored by species, with `setInterval` updating the x-scale domain and axis labels every few seconds. Data is loaded from a CSV via `d3.csv`, and the reusable chart module `scatterPlot.js` encapsulates the axes and marks.