This visualization presents a 4x4 scatter plot matrix comparing all numeric attributes of the classic Iris dataset, with points colored by species using a categorical color scale. It employs D3 v6 (loaded from a CDN) with API methods such as `scaleLinear`, `scaleOrdinal`, `extent`, `axisBottom`, `axisLeft`, and the selection-join pattern to render SVG charts that fill the browser window. Each subplot shows an X-Y combination of sepal and petal measurements, and diagonal panels display the variable name as a title.