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plotting a struct in a loop

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Benjamin
Benjamin on 9 Nov 2018
Edited: madhan ravi on 12 Nov 2018
I have this code:
semilogy(S.A600(:,1),S.A600(:,2));
I also want to plot S.A601 up to S.A620
This does not work:
for i = 1:1:20
semilogy(S.A60(i)(:,1),S.A60(i)(:,2));
hold on
end
How can I loop through each one or do I have to manually type each plot command ?

Accepted Answer

Image Analyst
Image Analyst on 9 Nov 2018
Try this:
% S.A601 = rand(10, 2); % Create sample data.
% S.A602 = rand(10, 2);
% S.A603 = rand(10, 2);
% S.A604 = rand(10, 2);
% S.A605 = rand(10, 2);
% S.A606 = rand(10, 2);
fn = fieldnames(S)
for k = 1:length(fn)
thisS = S.(fn{k})
x = thisS(:, 1);
y = thisS(:, 2);
fprintf('Printing field #%d.\n', k);
semilogy(x, y);
hold on
drawnow;
end
grid on;

  1 Comment

Benjamin
Benjamin on 12 Nov 2018
your answer worked great! now that I have tried loading the data in with a loop, it does not seem to work. Could you check here and maybe see where my mistake is? https://www.mathworks.com/matlabcentral/answers/429433-loading-in-excel-data-with-loop-and-plotting

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