This interactive scatter plot visualizes the Iris dataset, encoding petal width against sepal length with points colored and shaped by species. A reusable chart function built with d3.scaleLinear, d3.scaleOrdinal, and d3.symbol maps data to SVG paths, while d3.axisLeft and d3.axisBottom render axes. Every two seconds, the plot cycles through different numeric columns as the x-axis variable, updating the visualization via a setInterval callback that re-invokes the chart function with new accessor functions.