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mark (version 0.8.1)

fact: Factor

Description

Quickly create a factor

Usage

fact(x)

# S3 method for default fact(x)

# S3 method for character fact(x)

# S3 method for numeric fact(x)

# S3 method for integer fact(x)

# S3 method for Date fact(x)

# S3 method for POSIXt fact(x)

# S3 method for logical fact(x)

# S3 method for factor fact(x)

# S3 method for fact fact(x)

# S3 method for pseudo_id fact(x)

# S3 method for haven_labelled fact(x)

Value

A vector of equal length of x with class fact and factor. If x was ordered, that class is added in between.

Arguments

x

A vector of values

level orders

The order of the levels may be adjusted to these rules depending on the class of x:

character

The order of appearance

numeric/integer/Date/POSIXt

By the numeric order

logical

As TRUE, FALSE, then NA if present

factor

Numeric if levels can be safely converted, otherwise as they are

Details

fact() can be about 5 times quicker than factor() or as.factor() as it doesn't bother sorting the levels for non-numeric data or have other checks or features. It simply converts a vector to a factor with all unique values as levels with NAs included.

fact.factor() will perform several checks on a factor to include NA levels and to check if the levels should be reordered to conform with the other methods. The fact.fact() method simple returns x.

See Also

as_ordered()

Other factors: as_ordered(), char2fact(), drop_levels(), fact2char(), fact_na()