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logical    Examples

Convert numeric values to logical

Syntax

Description

K = logical(A) returns an array that can be used for logical indexing or logical tests.

A(B), where B is a logical array, returns the values of A at the indices where the real part of B is nonzero. B must be the same size as A.

Remarks

Logical arrays are also created by the relational operators (==,<,>,~, etc.) and functions like any, all, isnan, isinf, and isfinite.

Examples

Given A = [1 2 3; 4 5 6; 7 8 9], the statement B = logical(eye(3)) returns a logical array

which can be used in logical indexing that returns A's diagonal elements:

However, attempting to index into A using the numeric array eye(3) results in:



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