Incomplete sheet

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logical

For representing boolean values

Constants

Action	Code	Details
True	TRUE
False	FALSE
Missing value (NA)	NA

Create

Action	Code	Details
Empty logical vector, length 0	logical()

Logical vectors

Action	Code	Details
Logical vector of FALSE values, length n	logical(n)
Cast to logical	as.logical(y)
Parse string to logical	as.logical(y)	Parse failures return NA

Test

Action	Code	Details
Is logical	is.logical(x)

Logical scalars

Action	Code	Details
Is scalar and TRUE	isTRUE(x)
Is scalar and FALSE	isFALSE(x)

Logical vectors

Action	Code	Details
All elements TRUE	all(x)	Returns NA if x contains missing values!
All elements are TRUE, ignoring NAs	all(x, na.rm = TRUE)
All elements FALSE	!any(x)	Returns NA if x contains missing values!
All elements are FALSE, ignoring NAs	!any(x, na.rm = TRUE)
All NA	all(is.na(x))
Any NA	anyNA(x)
No NA	!anyNA(x)
No NA	assertthat::noNA(x)

Convert

Action	Code	Details
To integer (zeros and ones)	as.integer(x)
To numeric (zeros and ones)	as.numeric(x)
To character	as.character(x)