This visualization presents a 3D scatter plot of flower measurements, displaying both corolla length and corolla width against calyx dimensions in a single interactive view. The code uses the Plotly JavaScript library (plotly-2.9.0) with its `Plotly.newPlot` API to render two scatter traces: one 2D trace showing calyx length versus calyx width, and one 3D trace plotting calyx length, calyx width, and corolla width. Data is loaded from a CSV file hosted on GitHub using d3.csv, with the marker styling differentiating the two traces.