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how to convert structure array into matrix

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mahya pv
mahya pv on 2 Aug 2018
Edited: Adam Danz on 2 Aug 2018
i want to convert structure array into matrix but i get error while running this code in matlab2016 and 2017: haxes = cell2mat(struct2cell(my structure));
the error was: CELL2MAT does not support cell arrays containing cell arrays or objects.
is there anyone who can help me?
  1 Comment
jonas on 2 Aug 2018
Can you upload the struct as a .mat file?

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Answers (1)

Adam Danz
Adam Danz on 2 Aug 2018
Edited: Adam Danz on 2 Aug 2018
I assume the fields of your structure, 's' are cell arrays and that all of the cell arrays have the same size and are row vectors. If the fields are column vectors, some tiny adjustments will be needed.
Under these assumptions, here are two (admittedly weird) ways to convert 's' to a matrix. Simpler methods may exist.
% Fake data
s.f1 = {1 2 3};
s.f2 = {4 3 2};
Given these fake data, cell2mat(struct2cell(s)); will throw the error your described.
Option 1
sm = cell2mat(table2array(cell2table(struct2cell(s))));
Option 2
sm = cell2mat(reshape(struct2array(s), [], numel(fieldnames(s)))');
Option 2 is better.


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