Array of structures containing arrays

Sugyani Mahapatra

2017 6 28

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I have an array of structures. Each structure is composed of a matrix. I need to extract a particular element of the matrix for every structure element. For example: i/p: if s is an array of 2 structures such that, s(1) = struct('field1', [1:3;4:6]); s(2) = struct('field1', [4:6;1:3]); o/p: [s(1).field1(1,3) s(2).field1(1,3)]; I can do it by the use of loops, but is there any efficient way to do it??

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Andrei Bobrov 2017-6-28

在 MATLAB Online 中打开

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s(1) = struct('field1', [1:3;4:6]);
s(2) = struct('field1', [4:6;1:3]);
z = cell2mat(struct2cell(s))
out = squeeze(z(1,3,:))'

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Andrei Bobrov 2017-6-28

在 MATLAB Online 中打开

s(1) = struct('field1', [1:3;4:6], 'field2', [1:10]); 
s(2) = struct('field1', [4:6;1:3], 'field2', [11:20]);
t = cat(3,s.field1);
out = squeeze(t(1,3,:))'