Computing Essential Biodiversity Variables from Global Forest Change Data

Metrics of two Essential Biodiversity Variables: forest extents and forest fragmentation indices (O'connor et al., 2015) are computed by processing Global Forest Change data (Hansen et al., 2013) . The Forest Change Data are extracted using either Geographic Administrative Units, see <>, or user-defined polygons. Most of the procedures can be understood implementing two functions: FCPolygon() and EBVmetric().


New changes in forestChange V0.4:

Changes in function "GFCurls": A friendly message is printed if there is no internet connection. Besides, routines for processing URLs were changed implementing the functions "read_html" (package "curl"), and "html_nodes" and "html_attr" (package "rvest"). Finally, This function uses now the system of the machine ("Windows", "Linux") to change the encoding argument in "read.table" ("unknown", "UTF-8").

Reference manual

It appears you don't have a PDF plugin for this browser. You can click here to download the reference manual.


0.6 by Wilson Lara, 4 days ago

Browse source code at

Authors: Wilson Lara <[email protected]> , Victor Gutierrez-Velez <[email protected]>

Documentation:   PDF Manual  

GPL-3 license

Imports raster, rgdal, parallel, curl, graphics, rvest, stats, SDMTools, utils, xml2

See at CRAN