Flip or reverse a raster
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.
## 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)
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 |
SpatRaster
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)
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.