Compute the area of a cell

Compute the area of a cell

Usage

cell_area(raster_layer, unit = "ha")

Arguments

raster_layer

terra::rast() Raster object.

unit

unit object or a character that can be coerced to a unit (see unit package). Must be an area unit.

Value

numeric The area of a cell in the desired unit.

Details

The input raster must have a projected coordinate system. The distortion is not corrected. It could be using the cellSize function of the terra package, but this function is currently pretty slow for large rasters. If your problem is at regional scale, the distortion should be negligible. However, at larger scales, the best is to use an equal-area projected coordinate system.

Examples

# \donttest{
habitat_data <- rast(
  system.file("extdata", "habitat_hi_res.tif", package = "restoptr")
)
cell_area(habitat_data, "ha")
#> 0.08312891 [ha]
# }