This example visualizes a people dataset by plotting two 3D scatter plots side by side. The first trace maps human height, width, and arm length, while the second maps human height, width, and arm width. Using Plotly’s scatter3d type, the chart renders markers with customizable size, opacity, and line styling. The code loads the CSV from a GitHub gist via D3’s `d3.csv` function, extracts columns using a custom `unpack` helper, and then draws the plot with `Plotly.newPlot` into a designated div.