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Data Visualization Review: Gephi, Free Graph Exploration Software

Data Visualization Review: Gephi, Free Graph Exploration Software
I do not often get to play with networks, yet I find them fascinating and full of knowledge gathering potential. The data visualization works of Moritz Stefaner, Jer Thorp, and Mark Lombardi captivate me. I am intrigued by relationships, how we perceive them, and how we can understand them. Gephi, the "Open Graph Viz Platform", is not just for the hobbiest node nerd. It is a hardcore, professional tool for network researchers and other smarty pants. If you know the difference between Yifan Hu and Fruchterman Reingold, then you can use this tool effectively. So what is Gephi capable off? Gephi interface displaying airline traffic data. Pros — Options! Cons — Interface is a bit cluttered. Main interface displaying the Diseasome data. Review Overall, Gephi is a useful and interesting tool. There are some plugins available for Gephi that extend the functionality. The only thing keeping Gephi from being a professional grade tool is its bugginess and lack of documentation.

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SWF Charts > Introduction New Version 5! XML/SWF Charts is a simple, yet powerful tool to create attractive charts and graphs from XML data. Create an XML source to describe a chart, then pass it to this tool's flash file to generate the chart. The XML source can be prepared manually, or generated dynamically using any scripting language (PHP, ASP, CFML, Perl, etc.) XML/SWF Charts makes the best of both the XML and SWF worlds. XML provides flexible data generation, and Flash provides the best graphic quality. Fruchterman Reingold · gephi/gephi Wiki The Fruchterman-Reingold Algorithm is a force-directed layout algorithm. The idea of a force directed layout algorithm is to consider a force between any two nodes. In this algorithm, the nodes are represented by steel rings and the edges are springs between them. The attractive force is analogous to the spring force and the repulsive force is analogous to the electrical force. The basic idea is to minimize the energy of the system by moving the nodes and changing the forces between them. For more details refer to the Force Directed algorithm.

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