as_factor: Convert input to a factor

In hadley/forcats: Tools for Working with Categorical Variables (Factors)

Convert input to a factor

Description

Compared to base R, when x is a character, this function creates levels in the order in which they appear, which will be the same on every platform. (Base R sorts in the current locale which can vary from place to place.) When x is numeric, the ordering is based on the numeric value and consistent with base R.

Usage

as_factor(x, ...)

## S3 method for class 'factor'
as_factor(x, ...)

## S3 method for class 'character'
as_factor(x, ...)

## S3 method for class 'numeric'
as_factor(x, ...)

## S3 method for class 'logical'
as_factor(x, ...)

Arguments

x	Object to coerce to a factor.
...	Other arguments passed down to method.

Details

This is a generic function.

Examples

# Character object
x <- c("a", "z", "g")
as_factor(x)
as.factor(x)

# Character object containing numbers
y <- c("1.1", "11", "2.2", "22")
as_factor(y)
as.factor(y)

# Numeric object
z <- as.numeric(y)
as_factor(z)
as.factor(z)

hadley/forcats documentation built on Nov. 4, 2023, 2:24 a.m.