Unsing string for indexing though structures

Question

Jan-Philipp Göbel 2022-9-28

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1813590-unsing-string-for-indexing-though-structures

评论： Jan-Philipp Göbel 2022-9-28

Hey, I would like to create a while loop with which I can read mat files one after the other and evaluate them automatically without writing a separate program for each mat file. Loading the mat files works using the loop, but unfortunately I can't access the structures with a variable s2.

Does someone have a solution for it?

i = 108;
% A = ((0.1255)/2)^2*pi;
% ml_in_m3 = 1e-6;
while i <= 108
    pfad = '...';
    s = strcat(pfad,'Test3_',string(i),'.mat');
    s2 = strcat('Test3_',string(i));
    load(s);
    figure(2)
    plot(s2.X.Data,s2.Y(8).Data)
    t = s2.X.Data;
    y = s2.Y(8).Data;
    x = 0:0.001:s2.X.Data(end);
    y=interp1(t,y,x,'spline');
    i = i+1;
end
%the error that occur is: Unrecognized method, property, or field 'X' for class 'string'.

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Answer 1

KSSV 2022-9-28

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1813590-unsing-string-for-indexing-though-structures#answer_1062230

编辑：KSSV 2022-9-28

在 MATLAB Online 中打开

i = 108;
% A = ((0.1255)/2)^2*pi;
% ml_in_m3 = 1e-6;
while i <= 108
    pfad = '...';
    s = strcat(pfad,'Test3_',string(i),'.mat');
    % s2 = strcat('Test3_',string(i));
    s2 = load(s);   % <--changed here 
    figure(2)
    plot(s2.X.Data,s2.Y(8).Data)
    t = s2.X.Data;
    y = s2.Y(8).Data;
    x = 0:0.001:s2.X.Data(end);
    y=interp1(t,y,x,'spline');
    i = i+1;
end