sub-sub-.disk.frame: [[ interface for disk.frame using fst backend

In disk.frame: Larger-than-RAM Disk-Based Data Manipulation Framework

[[ interface for disk.frame using fst backend

Description

[[ interface for disk.frame using fst backend

Usage

## S3 method for class 'disk.frame'

  df[[
  ...,
  keep = NULL,
  rbind = TRUE,
  use.names = TRUE,
  fill = FALSE,
  idcol = NULL
]]

Arguments

df	a disk.frame
...	same as data.table
keep	the columns to srckeep
rbind	Whether to rbind the chunks. Defaults to TRUE
use.names	Same as in data.table::rbindlist
fill	Same as in data.table::rbindlist
idcol	Same as in data.table::rbindlist

Examples

cars.df = as.disk.frame(cars)
speed_limit = 50
cars.df[[speed < speed_limit ,.N, cut(dist, pretty(dist))]]

# clean up
delete(cars.df)

disk.frame documentation built on Aug. 24, 2023, 5:09 p.m.