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and

logical AND of the elements of an array

Calling Sequence

b=and(A)
b=and(A,'*')
b=and(A,'r')
b=and(A,1)
b=and(A,'c')
b=and(A,2)

Description

and(A) is the logical AND of elements of the boolean matrix A. and(A) returns %T ("true") if all entries of A are %T.

and([]) returns %T.

y=and(A,'r') (or, equivalently, y=and(A,1)) is the row-wise AND. It returns in each entry of the row vector y the AND of the rows of x (The AND is performed on the row index : y(j)= and(A(i,j),i=1,m)).

y=and(A,'c') (or, equivalently, y=and(A,2)) is the column-wise AND. It returns in each entry of the column vector y the AND of the columns of x (The AND is performed on the column index: y(i)= and(A(i,j),j=1,n)).

Examples

A = [];
and(A)

A = %T(ones(1, 3));
and(A)

A = %F(ones(1, 3));
and(A)

A = %T(ones(1, 3));
and(A, '*')
and(A, 'c')
and(A, 2)
and(A, 'r')
and(A, 1)

See Also


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