xapp function

Apply a function to the cells of a two SpatRasters

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

## S4 method for signature '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

Returns

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)