R: Sign Function

sign {base} | R Documentation

## Sign Function

### Description

`sign` returns a vector with the signs of the corresponding elements of `x` (the sign of a real number is 1, 0, or -1 if the number is positive, zero, or negative, respectively).

Note that `sign` does not operate on complex vectors.

### Usage

    sign(x)

### Arguments

`x` | a numeric vector

### Details

This is an internal generic primitive function: methods can be defined for it directly or via the `Math` group generic.

### See Also

`abs`

### Examples

    sign(pi)    # == 1
    sign(-2:3)  # -1 -1 0 1 1 1

[Package base version 3.1.2 Index]