fact: Factor

In mark: Miscellaneous, Analytic R Kernels

Factor

Description

Quickly create a factor

Usage

fact(x)

## Default S3 method:
fact(x)

## S3 method for class 'character'
fact(x)

## S3 method for class 'numeric'
fact(x)

## S3 method for class 'integer'
fact(x)

## S3 method for class 'Date'
fact(x)

## S3 method for class 'POSIXt'
fact(x)

## S3 method for class 'logical'
fact(x)

## S3 method for class 'factor'
fact(x)

## S3 method for class 'fact'
fact(x)

## S3 method for class 'pseudo_id'
fact(x)

## S3 method for class 'haven_labelled'
fact(x)

Arguments

x	A vector of values

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.

Value

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

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

See Also

as_ordered()

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

mark documentation built on June 8, 2025, 11:32 a.m.