Sign Function

Usage

sign(x)

Arguments

x a numeric vector

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.

See Also

abs

Examples

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

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