This scatter plot visualizes the Iris Dataset, mapping petal length on the x-axis and sepal length on the y-axis. It encodes data points as circles using D3’s `scaleLinear` to compute positions from the dataset’s extent. The visualization is rendered as an SVG in a full-window view, with axes generated via `axisLeft` and `axisBottom`. Data is loaded as CSV using `d3.csv` with numeric parsing, and marks are joined to the DOM with `selectAll` and `join`. The code is a vanilla HTML/JavaScript implementation using D3 v6.