Make a data.frame into a disk.frame

as.disk.frame(
  df,
  outdir = tempfile(fileext = ".df"),
  nchunks = recommend_nchunks(df),
  overwrite = FALSE,
  shardby = NULL,
  compress = 50,
  ...
)

Arguments

df: a disk.frame
outdir: the output directory
nchunks: number of chunks
overwrite: if TRUE the outdir will be overwritten, if FALSE it will throw an error if the directory is not empty
shardby: The shardkey
compress: the compression level 0-100; 100 is highest
...: passed to output_disk.frame

Examples

# write to temporary location
cars.df = as.disk.frame(cars) 

# specify a different path in the temporary folder, you are free to choose a different folder
cars_new_location.df = as.disk.frame(cars, outdir = file.path(tempdir(), "some_path.df"))

# specify a different number of chunks
# this writes to tempdir() by default
cars_chunks.df = as.disk.frame(cars, nchunks = 4, overwrite = TRUE) 

# clean up
delete(cars.df)
delete(cars_new_location.df)
delete(cars_chunks.df)