Researchers have created a Principal Graph using ElPiGraph library for the Iris dataset, providing insights into relationships between features of different flower species. The graph, similar to Metro Maps, simplifies high-dimensional data in a lower-dimensional space, showcasing connections and patterns between data points. By visualizing this graph with PCA, it becomes easier to identify clusters, transitions, and overall data structure.

Source: https://dev.to/singlestore/quick-tip-principal-graph-elpigraph-for-iris-dataset-83h