Apply a function to the cells of two SpatRasters — xapp • terra

Apply a function to the values of each cell of two (multilayer) SpatRasters.

Usage

# S4 method for class 'SpatRaster,SpatRaster'
xapp(x, y, fun, ..., filename="", overwrite=FALSE, wopt=list())

Arguments

x: SpatRaster
y: SpatRaster with the same geometry as x
fun: a function that operates on two vectors
...: additional arguments for fun. These are typically numerical constants. They should *never* be another SpatRaster
filename: character. Output filename
overwrite: logical. If TRUE, filename is overwritten
wopt: list with named options for writing files as in writeRaster

Value

SpatRaster

See also

app, lapp, tapp, Math-methods, roll

Examples

r <- rast(ncols=10, nrows=10, nlyr=5)
set.seed(1)
r <- init(r, runif)
s <- init(r, runif)
x <- xapp(r, s, fun=cor)