sort.RdSort the cell values of a SpatRaster across layers. You can also compute the sorting order.
Or sort the records of SpatVector (or data.frame) by specifiying the column number(s) or names(s) to sort on.
# S4 method for SpatRaster
sort(x, decreasing=FALSE, order=FALSE, filename="", ...)
# S4 method for SpatVector
sort(x, v, decreasing=FALSE)SpatRaster
logical. If TRUE, sorting is in decreasing order
logical. If TRUE the sorting order is returned instead of the sorted values
character. Output filename
additional arguments for writing files as in writeRaster
character or numeric indicating the column(s) to sort on
SpatRaster
f <- system.file("ex/elev.tif", package="terra")
r <- rast(f)
r <- c(r, r/2, r*2)
sort(r)
#> class : SpatRaster
#> dimensions : 90, 95, 3 (nrow, ncol, nlyr)
#> resolution : 0.008333333, 0.008333333 (x, y)
#> extent : 5.741667, 6.533333, 49.44167, 50.19167 (xmin, xmax, ymin, ymax)
#> coord. ref. : lon/lat WGS 84 (EPSG:4326)
#> source(s) : memory
#> names : elevation, elevation, elevation
#> min values : 70.5, 141, 282
#> max values : 273.5, 547, 1094
ord <- sort(r, order=TRUE)
# these two are the same
ord[[1]]
#> class : SpatRaster
#> dimensions : 90, 95, 1 (nrow, ncol, nlyr)
#> resolution : 0.008333333, 0.008333333 (x, y)
#> extent : 5.741667, 6.533333, 49.44167, 50.19167 (xmin, xmax, ymin, ymax)
#> coord. ref. : lon/lat WGS 84 (EPSG:4326)
#> source(s) : memory
#> name : elevation
#> min value : 0
#> max value : 1
which.min(r)
#> class : SpatRaster
#> dimensions : 90, 95, 1 (nrow, ncol, nlyr)
#> resolution : 0.008333333, 0.008333333 (x, y)
#> extent : 5.741667, 6.533333, 49.44167, 50.19167 (xmin, xmax, ymin, ymax)
#> coord. ref. : lon/lat WGS 84 (EPSG:4326)
#> source(s) : memory
#> name : which.min
#> min value : 2
#> max value : 2