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JpGraph
JpGraph is a fully OO-graph library which makes it easy to both draw a "quick and dirty" graph with a minimum of code and quite complex graphs which requires a very fine grain of control. The library tries to assign sensible default values for most parameters hence making the learning curve quite flat since for most of the time very few commands is required to draw graphs with a pleasing aesthetic look.
URL: http://www.aditus.nu/jpgraph/index.php
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Cost: Free (QPL) Platforms: N/A Version: 1.7
