write_disk.frame {disk.frame} | R Documentation |
Write disk.frame to disk
Description
Write a data.frame/disk.frame to a disk.frame location. If df is a data.frame then using the as.disk.frame function is recommended for most cases
Usage
write_disk.frame(
diskf,
outdir = tempfile(fileext = ".df"),
nchunks = ifelse("disk.frame" %in% class(diskf), nchunks.disk.frame(diskf),
recommend_nchunks(diskf)),
overwrite = FALSE,
shardby = NULL,
partitionby = NULL,
compress = 50,
...
)
output_disk.frame(...)
Arguments
diskf |
a disk.frame |
outdir |
output directory for the disk.frame |
nchunks |
number of chunks |
overwrite |
overwrite output directory |
shardby |
the columns to shard by |
partitionby |
the columns to (folder) partition by |
compress |
compression ratio for fst files |
... |
passed to cmap.disk.frame |
Examples
cars.df = as.disk.frame(cars)
# write out a lazy disk.frame to disk
cars2.df = write_disk.frame(cmap(cars.df, ~.x[1,]), overwrite = TRUE)
collect(cars2.df)
# clean up cars.df
delete(cars.df)
delete(cars2.df)
[Package disk.frame version 0.8.3 Index]