MATLAB: How to loop through a structure field which contains multiple arrays

Question

Hi all,

I have a big structure which contains different substructures.

The structure is called 'subjects' and contains information for each subject.

However, I am interested in angles, which are located in subjects.sessions.trials(1).data.angles.

subjects.sessions.trials(1).data.angles contains 28 fields, all being a 1289×1 double, which all have names of different angles.

I want to plot the 28 angles by looping through, but I cannot manage to select what I need in the for loop:

for i = 1:NSessions
    figure();
    plot(subjects.sessions.trials(i).data.angles. ......);
end    

Attached is a snapshot of what the structure field looks like.

I tried creating a cell array with the 28 names and then use

for i = 1:NSessions
    for k = 1:NAngleName
        figure();
        plot(subjects.sessions.trials(i).data.angles.AngleName{k});
    end
end

But this is not working.

Thanks in advance.

Answer 1

If you want to make your last attempt work, you might use eval:

eval(['plot(subjects.sessions.trials(i).data.angles.',AngleName{k},');']);