This function returns the unique values in a RasterLayer object or the unique combinations of the layers in a multilayer object.
Usage
# S4 method for RasterLayer,missing
unique(x, incomparables=FALSE, na.last=NA, progress="", ...)
# S4 method for RasterStackBrick,missing
unique(x, incomparables=FALSE, na.last=NA, progress="", ...)
Value
vector or matrix
Arguments
x
Raster object
incomparables
must be missing. The default value FALSE is used. See unique
na.last
logical. for controlling the treatment of NAs. If TRUE, missing values in the data are put last; if FALSE, they are put first; if NA, they are removed.
progress
character. Use "text" or "window" for a progress indicator