R: Hybrid Index, internal utilities

unsort {ff} | R Documentation

## Hybrid Index, internal utilities

### Description

Non-documented internal utilities that might change

### Usage

    unsort(x, ix)
    unsort.hi(x, index)
    unsort.ahi(x, index, ixre = any(sapply(index, function(i) {
        if (is.null(i$ix)) {
            if (i$re) TRUE else FALSE
        } else {
            TRUE
        }
    })), ix = lapply(index, function(i) {
        if (is.null(i$ix)) {
            if (i$re)
                orig <- rev(1:poslength(i))
            else orig <- 1:poslength(i)
        }
        else {
            orig <- i$ix
        }
        orig
    }))
    subscript2integer(x, maxindex = NULL, names = NULL)

### Arguments

`x` | `x`
`ix` | `ix`
`ixre` | `ixre`
`index` | `index`
`maxindex` | `maxindex`
`names` | `names`

### Details

These are utility functions for restoring original order after sorting. For now we 'mimic' the intuitive but wrong argument order of match() which should rather have the 'table' argument as its first argument, then one could properly method-dispatch on the type of table. xx We might change to proper 'unsort' generic, but then we have to change argument order.

### Value

undefined

### Author(s)

Jens Oehlschlägel

### See Also

`hi`, `as.hi`

[Package ff version 2.2-13 Index]