How do I loop through a structure field which contains multiple arrays?

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Inti Vanmechelen
Inti Vanmechelen 2019-1-4
评论： Inti Vanmechelen 2019-1-4
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 1289x1 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.matlab.PNG
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.
  2 个评论
Inti Vanmechelen
Inti Vanmechelen 2019-1-4
Thank you for your response KSSV.
I did read about getfields, but using 'getfields' still gives me 1x1 struct containing 28 fields which are all 1289x1 doubles. And it is those 1289x1 doubles which I would like to select, which is currently not workin out.

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采纳的回答

Daniele Mascali
Daniele Mascali 2019-1-4
If you want to make your last attempt work, you might use eval:
eval(['plot(subjects.sessions.trials(i).data.angles.',AngleName{k},');']);
  3 个评论
显示 1更早的评论
Daniele Mascali
Daniele Mascali 2019-1-4
You are right.
However, I was not aware of Dynamic Field References. One very simple solution is
plot(subjects.sessions.trials(i).data.angles.(AngleName{k}));
Thanks for the link!!

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