memisc: reorder.array – R documentation

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reorder.array

Reorder an Array or Matrix

Description

reorder.array reorders an array along a specified dimension according given names, indices or results of a function applied.

Usage

## S3 method for class 'array'
reorder(x,dim=1,names=NULL,indices=NULL,FUN=mean,...)
## S3 method for class 'matrix'
reorder(x,dim=1,names=NULL,indices=NULL,FUN=mean,...)

Arguments

`x`	An array
`dim`	An integer specifying the dimension along which `x` should be ordered.
`names`	A character vector
`indices`	A numeric vector
`FUN`	A function that can be used in `apply(x,dim,FUN)`
`...`	further arguments, ignored.

Details

Typical usages are

reorder(x,dim,names)
  reorder(x,dim,indices)
  reorder(x,dim,FUN)

The result of rename(x,dim,names) is x reordered such that dimnames(x)[[dim]] is equal to the concatenation of those elements of names that are in dimnames(x)[[dim]] and the remaining elements of dimnames(x)[[dim]].

The result of rename(x,dim,indices) is x reordered along dim according to indices.

The result of rename(x,dim,FUN) is x reordered along dim according to order(apply(x,dim,FUN)).

Value

The reordered object x.

Examples

(M <- matrix(rnorm(n=25),5,5,dimnames=list(LETTERS[1:5],letters[1:5])))
  reorder(M,dim=1,names=c("E","A"))
  reorder(M,dim=2,indices=3:1)
  reorder(M,dim=1)
  reorder(M,dim=2)

memisc

Management of Survey Data and Presentation of Analysis Results

v0.99.27.3

GPL-2

Authors

Martin Elff (with contributions from Christopher N. Lawrence, Dave Atkins, Jason W. Morgan, Achim Zeileis)

Initial release

2020-11-18