flip: Flip or reverse a raster

In terra: Spatial Data Analysis

Flip or reverse a raster

Description

Flip the values of a SpatRaster by inverting the order of the rows (vertical=TRUE) or the columns (vertical=FALSE).

rev is the same as a horizontal *and* a vertical flip.

Usage

## S4 method for signature 'SpatRaster'
flip(x, direction="vertical", filename="", ...)

## S4 method for signature 'SpatVector'
flip(x, direction="vertical")

## S4 method for signature 'SpatRaster'
rev(x)

Arguments

x	SpatRaster or SpatVector
direction	character. Should (partially) match "vertical" to flip by rows, or "horizontal" to flip by columns
filename	character. Output filename
...	additional arguments for writing files as in writeRaster

Value

SpatRaster

See Also

trans, rotate

Examples

r <- rast(nrow=18, ncol=36)
m <- matrix(1:ncell(r), nrow=18)
values(r) <- as.vector(t(m))
rx <- flip(r, direction="h")

values(r) <- as.vector(m)
ry <- flip(r, direction="v")

v <- rev(r)

terra documentation built on Oct. 13, 2023, 5:08 p.m.