terra (version 1.5-12)

mosaic: mosaic SpatRasters

Description

Combine adjacent and (partly) overlapping SpatRasters to form a single new SpatRaster. Values in overlapping cells are averaged.

This method is similar to the simpler, but faster merge method.

Usage

# S4 method for SpatRaster,SpatRaster
mosaic(x, y, ..., fun="mean", filename="", overwrite=FALSE, wopt=list())
# S4 method for SpatRasterCollection,missing
mosaic(x, fun="mean", filename="", ...)

Arguments

x

SpatRaster

y

object of same class as x

...

additional SpatRasters

fun

character. One of "sum", "mean", "median", "min", "max"

filename

character. Output filename

overwrite

logical. If TRUE, filename is overwritten

wopt

list with named options for writing files as in writeRaster

Value

SpatRaster

Details

The SpatRaster objects must have the same origin and spatial resolution. In areas where the SpatRaster objects overlap, the values of the SpatRaster that is last in the sequence of arguments will be retained.

See Also

merge

Examples

# NOT RUN {
x <- rast(xmin=-110, xmax=-80, ymin=40, ymax=70, ncols=30, nrows=30)
y <- rast(xmin=-85, xmax=-55, ymax=60, ymin=30, ncols=30, nrows=30)
z <- rast(xmin=-60, xmax=-30, ymax=50, ymin=20, ncols=30, nrows=30)
values(x) <- 1:ncell(x)
values(y) <- 1:ncell(y)
values(z) <- 1:ncell(z)

m1 <- mosaic(x, y, z)
m2 <- mosaic(z, y, x)

# if you have many SpatRasters make a SpatRasterCollection from a list
rlist <- list(x, y, z)
rsrc <- src(rlist)

m <- mosaic(rsrc)
# }