ffraster

Build a ff array to be used as a raster. For mapping between raster and ff types, see vmode and dataType

ffrarr(dim, mode, filename, readonly = TRUE)

Arguments

dim	dimensions in Raster order (nrow, ncol, nlayer)
mode	ff data mode see details
filename	file name as per writeRaster
readonly	open in readonly mode (TRUE is default)

Value

ff

Examples

mat <- volcano
library(raster)
b <- brick(raster(mat), raster(mat), raster(mat))
fn <- rasterTmpFile()
dt <- "byte"
ffraster:::.writeGRD(b, dataType = dt, filename = fn)
#> [1] TRUE
a <- ffrarr(dim(b), mode = dt, filename = fn, readonly = FALSE)