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How to call a certain part of a matrix which is a value of a field of a structure?

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What I want to do is to access the first column and then the second column of a 5-by-7 matrix which is the value of a field named B. B is the third field of struct A. How can I do it dynamically best?

Accepted Answer

Guillaume
Guillaume on 7 Feb 2017
Your description is really not clear. An example would help.
Get 2nd and 3rd column of matrix stored in field 'B' of structure A, regardless of the order of fields:
A.B(:, [2 3])
Get 2nd and 3rd column of matrix stored in the 3rd field of structure A, regardless of the names of the fields
fn = fieldnames(A);
A.(fn{3})(:, [2 3])

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