all {base}R Documentation

Are All Values True?

Description

Given a set of logical vectors, are all of the values true?

Usage

all(..., na.rm = FALSE)

Arguments

... one or more logical vectors. Other objects are coerced in a similar way as as.logical.default.
na.rm logical. If true NA values are removed before the result is computed.

Details

This is a generic function: methods can be defined for it directly or via the Summary group generic.

Value

Given a sequence of logical arguments, a logical value indicating whether or not all of the elements of x are TRUE.
The value returned is TRUE if all the values in x are TRUE, and FALSE if any the values in x are FALSE.
If na.rm = FALSE and x consists of a mix of TRUE and NA values, the value is NA.

Note

Prior to R 2.1.0, only NULL and logical, integer, numeric and complex vectors were accepted.

References

Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.

See Also

any, the “complement” of all, and stopifnot(*) which is an all(*) “insurance”.

Examples

range(x <- sort(round(rnorm(10) - 1.2, 1)))
if(all(x < 0)) cat("all x values are negative\n")

[Package base version 2.1.0 Index]