This 3D bar plot visualizes a 3D scatter dataset (from Plotly) as a collection of cubes, rendered using the d3-3d extension for D3 v4. The example shows how animated 3D shapes can be manipulated via drag interactions, with cube height encoding a data value. The visualization also includes an SVG-based 2D bar chart of UN population data, demonstrating a different rendering approach. The 3D component uses d3.drag for rotation and d3._3d for cube projection.