This visualization presents the Iris dataset as a scatter plot, mapping petal length and width on the x and y axes. Each data point is colored by species, using yellow, blue, and red to distinguish setosa, versicolor, and virginica. The code loads CSV data via `d3.csv` from a GitHub gist, uses `d3.scaleLinear` and `d3.extent` for scaling, and renders circles with SVG attributes like `cx` and `cy`. Axis labels are drawn with `d3.axisLeft` and `d3.axisBottom`, while the title "SCIENTIFIC DATA VISUALISATION" appears at the top.