R: Array: make array from vector

vector2array {ff} | R Documentation

## Array: make array from vector

### Description

makes array from vector respecting dim and dimorder

### Usage

    vector2array(x, dim, dimorder = NULL)

### Arguments

`x` | an input vector, recyled if needed
`dim` | `dim`
`dimorder` | `dimorder`

### Details

FILLS vector into array of dim where fastest rotating is dim[dimorder[1]], next is dim[dimorder[2]] and so forth. This is a generalization of converting vector to matrix(, byrow=TRUE). NOTE that the result is a ram array always stored in STANDARD dimorder !!! In this usage we sometimes term the dimorder 'bydim' because it does not change the physical layout of the result, rather bydim refers to the dimorder in which to interpret the vector (not the result). In `ff`, `update` and `clone` we have 'bydim' to contrast it from 'dimorder', the latter describing the layout of the file.

### Value

a suitable `array`

### Author(s)

Jens Oehlschlägel

### See Also

`array2vector`, `vectorIndex2arrayIndex`

### Examples

      vector2array(1:12, dim=c(3, 4))               # matrix(1:12, 3, 4)
      vector2array(1:12, dim=c(3, 4), dimorder=2:1) # matrix(1:12, 3, 4, byrow=TRUE)

[Package ff version 2.2-13 Index]