Glance at iGraph

The library iGraph (properly spelled as iGraph, but imported as igraph) is an open source and free “collection of network analysis tools with the emphasis on efficiency, portability, and ease of use”.[13] NetworkX (the tool of choice in the book) and iGraph are structurally similar, yet have their unique features and algorithms.

One of the most notable features of iGraph is its availability as a C language library with the bindings in C, Python, and R. The R application programming interface (API) makes the package a better alternative for the network analysts who have been trained as R programmers. The choice of C as the implementation language also makes the package two orders of magnitude faster than the comparable Python-only ...

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