Crop an extent, snapped to the grain — align

A crop (or extend), it snaps the input extent to the origin of the input extent (based on the dimension) #' Note that snap is modelled on the behaviour of the raster package, and is different from projwin in GDAL (WIP to illustrate).

align_extent(x, dimension, extent = NULL, snap = c("out", "near", "in"))

Arguments

x: extent
dimension: integer ncol, nrow
extent: numeric extent xmin,xmax,ymin,ymax
snap: out by default, may be near or in

Value

aligned extent

Examples

align_extent(c(4.5, 5.6, 2, 4), c(10, 5), c(0, 10, 0, 5))
#> [1] 4 6 2 4