list.findi: Find the indices of a number of elements in a list or vector...

In rlist: A Toolbox for Non-Tabular Data Manipulation

Description

Find the indices of a number of elements in a list or vector satisfying a given condition

Usage

list.findi(.data, cond, n = 1L)

Arguments

.data	A list or vector
cond	A logical lambda expression
n	The number of items to find. (n = 1L by default)

Value

an integer vector consisting of the elements indices

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.findi(x, type=='B')
list.findi(x, min(score$c1,score$c2) >= 8)
list.findi(x, min(score$c1,score$c2) <= 8, n = 2)

Example output

[1] 2
[1] 1
[1] 1 3

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