or

logical OR of the elements of an array

Calling Sequence

or(A), or(A,'*')
or(A,'r'), or(A,1)

or(A,'c'), or(A,2)

Description

or(A) gives the or of the elements of the boolean matrix A. or(A) is true ( %t) if at least one entry of A is %t.

or([]) returns %F.

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

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

Examples

or([%t %t %f])

See Also

• or operator (|) logical OR operator
• and logical AND of the elements of an array
• not (~) logical not
• find find indices of boolean vector or matrix true elements