This interactive scatter plot visualizes physical measurements of wheat kernels, plotting perimeter against kernel length with circular marks colored by species. Built as a reusable D3.js module using `d3.scaleLinear`, `d3.axisLeft`, and `d3.axisBottom`, it cycles through four variables every two seconds, updating the x-axis and point positions via `setInterval`. Data loads from a remote CSV file using `d3.csv`, with SVG rendering and smooth transitions between attribute mappings.