freq {raster} | R Documentation |
Frequency table
Description
Frequency table of the values of a RasterLayer.
Usage
## S4 method for signature 'RasterLayer'
freq(x, digits=0, value=NULL, useNA='ifany', progress='', ...)
## S4 method for signature 'RasterStackBrick'
freq(x, digits=0, value=NULL, useNA='ifany', merge=FALSE, progress='', ...)
Arguments
x |
RasterLayer |
digits |
non-negative integer for rounding the cell values. Argument is passed to |
value |
numeric, logical or NA. An optional single value to only count the number of cells with that value |
useNA |
character. What to do with NA values? Options are "no", "ifany", "always". See to |
progress |
character to specify a progress bar. Choose from 'text', 'window', or ” (the default, no progress bar) |
merge |
logical. If |
... |
additional arguments (none implemented) |
Value
matrix (RasterLayer). List of matrices (one for each layer) or data.frame (if merge=TRUE
) (RasterStack or RasterBrick)
See Also
Examples
r <- raster(nrow=18, ncol=36)
values(r) <- runif(ncell(r))
r[1:5] <- NA
r <- r * r * r * 5
freq(r)
freq(r, value=2)
s <- stack(r, r*2, r*3)
freq(s, merge=TRUE)
[Package raster version 3.6-26 Index]