R: Divide list/vector elements into exclusive groups

list.group {rlist} | R Documentation

## Divide list/vector elements into exclusive groups

### Description

Divide list/vector elements into exclusive groups

### Usage

    list.group(.data, ..., sorted = TRUE)

### Arguments

`.data` | A `list` or `vector`
`...` | One or more expressions in the scope of each element to evaluate as keys
`sorted` | `TRUE` to sort the group keys. Ignored when the key has multiple entries.

### Value

A list of group elements each contain all the elements in `.data` belonging to the group

### See Also

`list.ungroup`

### Examples

    x <- list(p1 = list(type='A',score=list(c1=10,c2=8)),
           p2 = list(type='B',score=list(c1=9,c2=9)),
           p3 = list(type='B',score=list(c1=9,c2=7)))
    list.group(x, type)
    list.group(x, mean(unlist(score)))

[Package rlist version 0.4.6.1 Index]