muStat: which.na – R documentation

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which.na

Determine Which Values are Missing Values

Description

which.na returns an integer vector describing which values in the input vector, if any, are missing

Usage

which.na(x)

Arguments

`x`	a data object

Value

integer vector containing indices of elements in x which are missing. If there are no missing values, the functions return an integer vector of length 0 ( numeric(0)).

Author(s)

Knut M. Wittkowski kmw@rockefeller.edu

Examples

x <- c(1, 4, NA, 0, 5)
which.na(x)
# [1] 3

muStat

Prentice Rank Sum Test and McNemar Test

v1.7.0

GPL (>= 2)

Authors

Knut M. Wittkowski <kmw@rockefeller.edu> and Tingting Song <ttsong@gmail.com>

Initial release

2010-09-17