ANY Any True Function
Section: Elementary Functions
UsageReduces a logical array along a given dimension by testing for any logical 1s. The general syntax for its use is
y = any(x,d)
x is an
n-dimensions array of
The output is of
logical type. The argument
optional, and denotes the dimension along which to operate.
y is the same size as
x, except that it is
singular along the operated direction. So, for example,
x is a
3 x 3 x 4 array, and we
any operation along
d=2, then the output is of size
3 x 1 x 4.
Function InternalsThe output is computed via
d is omitted, then the summation is taken along the
first non-singleton dimension of
ExampleThe following piece of code demonstrates various uses of the summation function
--> A = [1,0,0;1,0,0;0,0,1] A = 1 0 0 1 0 0 0 0 1
We start by calling
any without a dimension argument, in which
case it defaults to the first nonsingular dimension (in this case,
along the columns or
d = 1).
--> any(A) ans = 1 0 1
Next, we apply the
any operation along the rows.
--> any(A,2) ans = 1 1 1