This radial tree visualization displays a hierarchical dataset from a CSV file, using a circular layout where branches extend from a central root. The visualization supports panning and zooming interaction, allowing users to explore the hierarchy. Built with D3 v4, the code uses `d3.stratify`, `d3.tree`, `d3.linkRadial`, and `d3.csv` to process and render the data as an SVG. Nodes are drawn as circles with text labels, and links are rendered as curved paths with light blue strokes. The tree is positioned within a large SVG canvas, with labels rotated to follow the radial structure.