Draws plots of sites in geographical (latlong) and environmental (2-axis PCA) space.
Usage
outliers(longlat, layers)
Arguments
longlat
Matrix of longitude and latitude (two columns) of species occurrence records.
layers
Raster* object as defined by package raster. It can be any set of environmental layers thought to allow the identification of environmental outliers.
Value
No values are returned, two plots are drawn for visual inspection.
Details
Erroneous data sources or errors in transcriptions may introduce outliers that can be easily detected by looking at simple graphs of geographical or environmental space.