mosaic {terra}

R Documentation

mosaic SpatRasters

Description

Combine adjacent and (partly) overlapping SpatRasters to form a single new SpatRaster. Values in overlapping cells are averaged (by default) or can be computed with another function.

The SpatRasters must have the same origin and spatial resolution.

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

Usage

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

## S4 method for signature '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

See Also

merge

Examples

Run examples

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 <- sprc(rlist)

m <- mosaic(rsrc)

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