rotate {terra}

R Documentation

Rotate a SpatRaster along longitude

Description

Rotate a SpatRaster that has longitude coordinates from 0 to 360, to standard coordinates between -180 and 180 degrees (or vice-versa). Longitude between 0 and 360 is frequently used in global climate models.

Usage

## S4 method for signature 'SpatRaster'
rotate(x, left=TRUE, filename="", ...)

Arguments

x	SpatRaster or SpatVector
left	logical. If TRUE, rotate to the left, else to the right
filename	character. Output filename
...	additional arguments for writing files as in writeRaster

Value

SpatRaster

See Also

shift and spin

Examples

Run examples

x <- rast(nrows=9, ncols=18, nl=3, xmin=0, xmax=360)
v <- rep(as.vector(t(matrix(1:ncell(x), nrow=9, ncol=18))), 3)
values(x) <- v
z <- rotate(x)

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