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matchMulti (version 1.1.12.1)

is.binary: Check if a variable is binary

Description

Examines a vector that is not coded as a logical to see if it contains only 0s and 1s.

Usage

is.binary(x)

Value

a logical value, TRUE if the vector contains only 0s and 1s and FALSE otherwise.

Arguments

x

A vector.

Author

Luke Keele, Penn State University, ljk20@psu.edu

Sam Pimentel, University of California, Berkeley, spi@berkeley.edu