FRAGSTATS is a computer software program designed to compute a wide variety of landscape metrics for categorical map patterns.The original software (version 2) was released in the public domain during 1995 in association with the publication of a USDA Forest Service General Technical Report (McGarigal and Marks 1995).
Since then, hundreds of professionals have enjoyed the use of FRAGSTATS. Due to its popularity, the program was completely revamped in 2002 (version 3.3). Recently, the program was upgraded to accommodate ArcGIS10.x. The program is currently undergoing a major revamping, which will result in the release of version 4.0 early in 2012. Version 4.0 has a completely redisigned architecture and is designed to support the addition of cell-level metrics and surface pattern metrics, among other things. Version 4.0 has essentially the same functionality as version 3.x, but with a new user interface that reflects the redesign of the model architecture, and is simply a stop-gap release for individuals that work with ArcGIS10.x. We expect to release additional versions (e.g., 4.1 and so on) shortly thereafter that incorporate new features.
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