how to average a vector of arrays in Matlab

numArrays = numel(indexes_every.PLV.data)
sumMatrix = zeros(22, 22);
for k = 1 : numArrays
    sumMatrix = sumMatrix + indexes_every.PLV.data{k};
end
meanMatrix = sumMatrix / numArrays

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Answer 2

Steven Lord 2022-6-27

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1748575-how-to-average-a-vector-of-arrays-in-matlab#answer_994180

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Concatenate them in the third dimension then call mean with the dimension input.

M = magic(4)
M = 4×4
    16     2     3    13
     5    11    10     8
     9     7     6    12
     4    14    15     1
E = eye(4)
E = 4×4
     1     0     0     0
     0     1     0     0
     0     0     1     0
     0     0     0     1
N = ones(4)
N = 4×4
     1     1     1     1
     1     1     1     1
     1     1     1     1
     1     1     1     1
C = {M, E, N}
C = 1×3 cell array
    {4×4 double}    {4×4 double}    {4×4 double}
A = cat(3, C{:})
A = 
A(:,:,1) =

    16     2     3    13
     5    11    10     8
     9     7     6    12
     4    14    15     1


A(:,:,2) =

     1     0     0     0
     0     1     0     0
     0     0     1     0
     0     0     0     1


A(:,:,3) =

     1     1     1     1
     1     1     1     1
     1     1     1     1
     1     1     1     1
mean(A, 3)
ans = 4×4
    6.0000    1.0000    1.3333    4.6667
    2.0000    4.3333    3.6667    3.0000
    3.3333    2.6667    2.6667    4.3333
    1.6667    5.0000    5.3333    1.0000