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hdd (version 0.1.1)

Easy Manipulation of Out of Memory Data Sets

Description

Hard drive data: Class of data allowing the easy importation/manipulation of out of memory data sets. The data sets are located on disk but look like in-memory, the syntax for manipulation is similar to 'data.table'. Operations are performed "chunk-wise" behind the scene.

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Version

Install

install.packages('hdd')

Monthly Downloads

270

Version

0.1.1

License

GPL-3

Maintainer

Laurent Berge

Last Published

August 25th, 2023

Functions in hdd (0.1.1)

hdd_merge

Merges data to a HDD file
hdd_slice

Applies a function to slices of data to create a HDD data set
hdd-package

Easy manipulation of out of memory data sets
hdd

Hard drive data set
names.hdd

Variables names of a HDD object
guess_delim

Guesses the delimiter of a text file
dim.hdd

Dimension of a HDD object
$.hdd

Extracts a single variable from a HDD object
hdd_setkey

Sorts HDD objects
summary.hdd

Summary information for HDD objects
setHdd_extract.cap

Sets/gets the size cap when extracting hdd data
[.hdd

Extraction of HDD data
write_hdd

Saves or appends a data set into a HDD file
print.hdd

Print method for HDD objects
readfst

Read fst or HDD files as DT
origin

Extracts the origin of a HDD object
peek

Peek into a text file
guess_col_types

Guesses the columns types of a file
txt2hdd

Transforms text data into a HDD file