Appending data in multiple structures using a loop

Question

Binu 2021-2-11

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/742707-appending-data-in-multiple-structures-using-a-loop

回答： Stephen23 2021-2-17

Hi all,

I have three *.mat files as shown under the Current Folder space in the image. Each mat file has two structures named Config and Waves_Data as shown in the Workspace. Under the Waves_Data, there are several Fields as shown in Variables section. I need to extract Time and Status_ Amplitude fields from each *.mat file and append them one after the other to have a combined Time and combined Status_Amplitude.

How can I put these into a loop. Appreciate your thoughts.

Thank you

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Answer 1

Stephen23 2021-2-17

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/742707-appending-data-in-multiple-structures-using-a-loop#answer_625907

在 MATLAB Online 中打开

D = 'absolute/relative path to where the files are saved';
S = dir(fullfile(D,'*.mat'));
N = numel(S);
for k = 1:N
    F = fullfile(D,S(k).name);
    T = load(F);
    S(k).Time = T.Waves_Data.Time;
    S(k).StAm = T.Waves_Data.Status_Amplitude;
end
Time = horzcat(S.Time) % or VERTCAT
StAm = horzcat(S.StAm) % or VERTCAT