MATLAB Functions all and any
Jun. 13, 2025 • Updated Jun. 13, 2025
MATLAB all function
For MATLAB all function1, along the specified dimension of the input matrix A:
- if all elements are non-zero (so-called “all non-zero”), then
all(A)is1; - if there is at least one zero, then
all(A)is0.
Here is an example:
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clc, clear, close all
rng("default")
A = randn(5,7);
A(:, 3:4) = 0;
A(3, :) = 0;
B = A;
B(3, :) = randn(1, width(A));
A
all(A)
all(A, 2)
all(A, "all")
B
all(B)
all(B, 2)
all(B, "all")
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A =
0.5377 -1.3077 0 0 0.6715 1.0347 0.8884
1.8339 -0.4336 0 0 -1.2075 0.7269 -1.1471
0 0 0 0 0 0 0
0.8622 3.5784 0 0 1.6302 0.2939 -0.8095
0.3188 2.7694 0 0 0.4889 -0.7873 -2.9443
ans =
1×7 logical array
0 0 0 0 0 0 0
ans =
5×1 logical array
0
0
0
0
0
ans =
logical
0
B =
0.5377 -1.3077 0 0 0.6715 1.0347 0.8884
1.8339 -0.4336 0 0 -1.2075 0.7269 -1.1471
1.4384 0.3252 -0.7549 1.3703 -1.7115 -0.1022 -0.2414
0.8622 3.5784 0 0 1.6302 0.2939 -0.8095
0.3188 2.7694 0 0 0.4889 -0.7873 -2.9443
ans =
1×7 logical array
1 1 0 0 1 1 1
ans =
5×1 logical array
0
0
1
0
0
ans =
logical
0
MATLAB any function
For MATLAB any function2, along the specified dimension of the input matrix A:
- if there is at least one non-zero (so-called “any non-zero”), then
any(A)is1; - if all elements are zero, then
any(A)is0;
Here is an example:
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clc, clear, close all
rng("default")
A = randn(5,7);
A(:, 3:4) = 0;
A(3, :) = 0;
B = A;
B(3, :) = randn(1, width(A));
A
any(A)
any(A, 2)
any(A, "all")
B
any(B)
any(B, 2)
any(B, "all")
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A =
0.5377 -1.3077 0 0 0.6715 1.0347 0.8884
1.8339 -0.4336 0 0 -1.2075 0.7269 -1.1471
0 0 0 0 0 0 0
0.8622 3.5784 0 0 1.6302 0.2939 -0.8095
0.3188 2.7694 0 0 0.4889 -0.7873 -2.9443
ans =
1×7 logical array
1 1 0 0 1 1 1
ans =
5×1 logical array
1
1
0
1
1
ans =
logical
1
B =
0.5377 -1.3077 0 0 0.6715 1.0347 0.8884
1.8339 -0.4336 0 0 -1.2075 0.7269 -1.1471
1.4384 0.3252 -0.7549 1.3703 -1.7115 -0.1022 -0.2414
0.8622 3.5784 0 0 1.6302 0.2939 -0.8095
0.3188 2.7694 0 0 0.4889 -0.7873 -2.9443
ans =
1×7 logical array
1 1 1 1 1 1 1
ans =
5×1 logical array
1
1
1
1
1
ans =
logical
1
References