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.

abs
sign(pi)    # == 1