This fork displays two 3D scatter plots of the Iris dataset, showing sepal length, sepal width, and petal length in one trace, and sepal length, sepal width, and petal width in another, using gray and translucent markers. The code loads the CSV data with `d3.csv` and renders the interactive chart via the Plotly `Plotly.newPlot` API, setting marker size, opacity, and line styling for each `scatter3d` trace.