This interactive dashboard visualizes relationships between baseball hitting metrics, with drop-down menus to select which metrics appear on the x- and y-axes of an animated scatter plot. It uses d3.scaleLinear, d3.axisBottom, d3.axisLeft, and d3.transition to render and animate SVG circles representing individual swings. A React hook loads CSV data via d3.csv, and hovering over points shows a tooltip with swing details. The chart responds to container resizing through a ResizeObserver.