list.group: Divide list/vector elements into exclusive groups

In rlist: A Toolbox for Non-Tabular Data Manipulation

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)))

Example output

$A
$A$p1
$A$p1$type
[1] "A"

$A$p1$score
$A$p1$score$c1
[1] 10

$A$p1$score$c2
[1] 8




$B
$B$p2
$B$p2$type
[1] "B"

$B$p2$score
$B$p2$score$c1
[1] 9

$B$p2$score$c2
[1] 9



$B$p3
$B$p3$type
[1] "B"

$B$p3$score
$B$p3$score$c1
[1] 9

$B$p3$score$c2
[1] 7




$`8`
$`8`$p3
$`8`$p3$type
[1] "B"

$`8`$p3$score
$`8`$p3$score$c1
[1] 9

$`8`$p3$score$c2
[1] 7




$`9`
$`9`$p1
$`9`$p1$type
[1] "A"

$`9`$p1$score
$`9`$p1$score$c1
[1] 10

$`9`$p1$score$c2
[1] 8



$`9`$p2
$`9`$p2$type
[1] "B"

$`9`$p2$score
$`9`$p2$score$c1
[1] 9

$`9`$p2$score$c2
[1] 9

rlist documentation built on Sept. 5, 2021, 5:30 p.m.