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and

and — (&) logical and

Calling sequence

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

Description

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

y=and(A,'r') (or, equivalently, y=and(A,1)) is the rowwise 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 columnwise 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))).

A&B gives the element-wise logical and of the booleans matrices A and B .A and B must be matrices with the same dimensions or one from them must be a single boolean.

See also

not, or
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