This scatter plot visualizes the Iris dataset, showing the relationships between sepal and petal dimensions across three Iris species. Colored circles represent individual flowers, with distinct colors for Iris-setosa, Iris-versicolor, and Iris-virginica. The visualization is interactive, allowing users to select which measurements appear on the x and y axes through dropdown menus. Hovering over the legend highlights all points of a corresponding species by increasing their opacity. The code uses D3.js version 5, with functions like `scaleLinear` for axis scaling, `axisBottom` and `axisLeft` for rendering axes, and `transition` for smooth animations when the data is re-rendered or filtered. Data is loaded from a CSV file, and the SVG canvas is dynamically updated with new points and axes.