R: Reload ffSaved Datasets

ffload {ff} | R Documentation

## Reload ffSaved Datasets

### Description

Reload datasets written with the function `ffsave` or `ffsave.image` .

### Usage

    ffload(file, list = character(0L), envir = parent.frame()
    , rootpath = NULL, overwrite = FALSE)

### Arguments

`file` | a character string giving the name (without extension) of the `.RData` and `.ffData` files to load
`list` | An optional vector of names selecting those objects to be restored (default NULL restores all)
`envir` | the environment where the data should be loaded.
`rootpath` | an optional rootpath where to restore the ff files (default NULL restores in the original location)
`overwrite` | logical indicating whether possibly existing ff files shall be overwritten

### Details

`ffinfo` can be used to inspect the contents an ffsaved pair of `.RData` and `.ffData` files. Argument `list` can then be used to restore only part of the ffsave.

### Value

A character vector with the names of the restored ff files

### Note

The ff files are not platform-independent with regard to byte order. For large files and the zip64 format use `zip 3.0` and `unzip 6.0` from http://www.info-zip.org/.

### Author(s)

Jens Oehlschlägel

### See Also

`load`, `ffsave`, `ffinfo`, `ffdrop`

[Package ff version 2.2-13 Index]