This example shows an interactive radial tree diagram built with D3.js v6 and React. It visualizes a small genealogical dataset parsed with `d3.csvParse` and processed through `d3.stratify` to create a hierarchy of nodes connected by curved paths rendered as SVG. The layout uses `d3.cluster` to position nodes radially, with text labels rotated according to their angular position and sized by depth via `d3.scaleSqrt`. SVG paths draw links between parent and child nodes, while text elements display names.