all

Test whether all elements of an array are nonzero.

Syntax

B = all(A)
B = all(A, dim)
B = all(A, 'all')

Description

Returns logical true (1) if all elements of A along the operating dimension are nonzero (or true), false (0) otherwise. With no dimension argument, operates along the first non-singleton dimension. With 'all', reduces every element to a single scalar.

Examples

all([1 1 1])                % 1
all([1 0 1])                % 0
all([1 1; 1 0])             % [1 0]   per-column
all([1 1; 1 0], 'all')      % 0

See also

• any — Test whether any element of an array is nonzero.
• sum — Sum elements of an array.

Also categorized under: Range Functions / Math.