Directed acyclic graph - Wikipedia2.1 Reachability relation, transitive closure, and transitive reduction
Nexus friend grapher is no more
Following an announcement on Sept 30 2009, Nexus friend grapher shut down permanently on Oct 7 2009. We had many users, and we thank them for talking about Nexus. Nexus launched in October 2007; a few early testers knew it as Friend Atlas before a friend came up with the better name. Nexus generated over 500,000 friend graphs for 84,000 users. We shut down Nexus because it was devouring disk space
The igraph library
The igraph library Library for creating and manipulating graphs
pChart | a PHP Charting library
pChart 2.x is born, you can start moving your script to this new version. The new website is at www.pchart.net. pChart is a PHP class oriented framework designed to create aliased charts. Most of todays chart libraries have a cost, our project is intended to be free. Data can be retrieved from SQL queries, CSV files, or manually provided. This project is still under development and new features or
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