Artificial raster dataset representing grain sizes

The ratified raster dataset represents grain sizes with the three classes clay, silt and sand, and WGS84 as a coordinate reference system.

grain

Format

An object of class RasterLayer of dimension 6 x 6 x 1.

Examples

if (requireNamespace("raster", quietly = TRUE)) {
  library(raster)
  data(grain)
  grain
}
#> class      : RasterLayer 
#> dimensions : 6, 6, 36  (nrow, ncol, ncell)
#> resolution : 0.5, 0.5  (x, y)
#> extent     : -1.5, 1.5, -1.5, 1.5  (xmin, xmax, ymin, ymax)
#> crs        : +proj=longlat +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0 
#> source     : memory
#> names      : layer 
#> values     : 1, 3  (min, max)
#> attributes :
#>  ID VALUE
#>   1  clay
#>   2  silt
#>   3  sand
#>