Tools for data handling and analysis in macroecology
Description
R functions for handling and analyzing geographic data, mainly
species' geographic distributions (in ESRI shapefile format) and
environmental variables (in raster format), as well as species' information
related to their description (e.g. taxonomy and year of description) and
conservation status (e.g. category of threat, population trend) as provided
by the IUCN's RedList database. The package includes functions to create
presence-absence matrices based on species distributions and user-defined
grid systems, from which several other functions could be applied to
generate, for example, species richness rasters and maps, and geographical
midpoints of species. In addition, it provides a function to create spatial
correlograms of variables, based on the Moran's I index, under the
equiprobable or equidistant criterion to define distance classes.