How to perform function whos output is a struct in a loop?

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Nicholas Kavouris
Nicholas Kavouris 2023-1-25
编辑： Stephen23 2023-1-25
I am trying to loop a data extraction program over multiple files in a string array, and place the results in a struct, but i continue getting the error
Subscripted assignment between dissimilar structures
GPdata=struct();
for k=length(files):-1:1
[GPdata(k)]=extractDataV2(files(k));
end
how can i get the output of the function to populate subsequent rows of the GPdata struct?

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回答（1 个）

Stephen23
Stephen23 2023-1-25
编辑：Stephen23 2023-1-25
Assuming identical fieldnames, the simplest and most robust solution is to concatenate the structure after the loop:
N = numel(files);
C = cell(1,N);
for k = 1:N
C{k} = extractDataV2(files(k));
end
S = [C{:}]
If you really want to use complex, obfuscated approaches involving indexing into a structure array, see this thread:
https://www.mathworks.com/matlabcentral/answers/12912-how-to-create-an-empty-array-of-structs

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