Open Source Software and Scripts


Maxent software for modeling species niches and distributions applies a machine-learning technique called maximum entropy modeling. From a set of environmental (e.g., climatic) grids and georeferenced occurrence localities, the model expresses a probability distribution where each grid cell has a predicted suitability of conditions for the species.
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The Event Visualization Tool (eVis) has been developed to easily view geocoded photos associated by attributes to features in the QGIS mapping environment. eVis has been developed in an adaptable way to allow for maximum usage.
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The Perpendicular Distance Calculator is a platform-independent Java application that implements a powerful suite of spherical functions for processing observations made during standard line transect surveys.

The Geographic Distance Matrix Generator is a platform-independent Java application that implements the same powerful suite of spherical functions as the Perpendicular Distance Calculator to compute all pairwise distances from a simple list of geographic coordinates.
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R scripts and guides: a collection of scripts written in the R programming language and guides that explain how the scripts work. R scripts and guides are maintained in a Bitbucket repository organized by application. After you click on an application link, you will find the most recent version of R scripts and guides by clicking on the “Source” link on the left side of the page. To download an R script (.R file extension) or guide (.pdf file extension) right-click on the link so you can save it on your computer.