MATLAB Function Reference Volume 1: A - E - Bad Request

2any
Purpose Test for any nonzeros
Syntax B = any(A)
B = any(A,dim)
Description B = any(A) tests whether any of the elements along various dimensions of an
array are nonzero or logical true (1).
If A is a vector, any(A) returns logical true (1) if any of the elements of A are
nonzero, and returns logical false (0) if all the elements are zero.
If A is a matrix, any(A) treats the columns of A as vectors, returning a row
vector of 1s and 0s.
If A is a multidimensional array, any(A) treats the values along the first
non-singleton dimension as vectors, returning a logical condition for each
vector.
B = any(A,dim) tests along the dimension of A specified by scalar dim.
1 0 1
0 0 0
Examples Given,
A
A = [0.53 0.67 0.01 0.38 0.07 0.42 0.69]
then B = (A < 0.5) returns logical true (1) only where A is less than one half:
0 0 1 1 1 1 0
The any function reduces such a vector of logical conditions to a single
condition. In this case, any(B) yields 1.
This makes any particularly useful in if statements,
if any(A < 0.5)
do something
end
1 0 1
any(A,1)
1
0
any(A,2)
any
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