R: Getting and setting names

names.ff {ff} | R Documentation

## Getting and setting names

### Description

For `ff_vector`s you can set names, though this is not recommended for large objects.

### Usage

      ## S3 method for class 'ff'
    names(x)
      ## S3 replacement method for class 'ff'
    names(x) <- value
      ## S3 method for class 'ff_array'
    names(x)
      ## S3 replacement method for class 'ff_array'
    names(x) <- value

### Arguments

`x` | a ff vector
`value` | a character vector

### Details

If `vw` is set, `names.ff` returns the appropriate part of the names, but you can't set names while `vw` is set. `names.ff\_array` returns NULL and setting names for `ff_array`s is not allowed, but setting `dimnames` is.

### Value

`names` returns a character vector (or NULL)

### Author(s)

Jens Oehlschlägel

### See Also

`names`, `dimnames.ff_array`, `vw`, `virtual`

### Examples

      x <- ff(1:26, names=letters)
      names(x)
      names(x) <- LETTERS
      names(x)
      names(x) <- NULL
      names(x)
      rm(x); gc()

[Package ff version 2.2-13 Index]