How can I assign subfield values of one structure to another structure by using specific row index number in one line of code?

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Mete Soylu 2022-4-6

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https://ww2.mathworks.cn/matlabcentral/answers/1689795-how-can-i-assign-subfield-values-of-one-structure-to-another-structure-by-using-specific-row-index-n

关闭： Stephen23 2022-4-6

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% Hi everyone. I have a problem related with assigning series of values to
% a specific row indexes of a structure subfields from another structure's
% subfields
% Let me explain my case step by step with an example code
% I have an Output structure that I preallocated with nan values and subfield
%  array sizes (in columns) are different from each other but row lengths are same
OutputStruct.SubField1 = nan(100, 3);
OutputStruct.SubField2 = nan(100, 1);
OutputStruct.SubField3 = nan(100, 30);
OutputStruct.SubField4 = nan(100, 30);
% I created an increment value that I will use in for loop
inc = 0;
% Now I have a for loop that will cycle as the number of row length of OutputStruct subfields
for i = 1:100
% I am refreshing increment value in every cycle
inc = inc +1;
%%%
% SOME CALCULATIONS
%%%
% I have an another structure with same number of subfields and fieldnames of OutputStruct
% but this time it's row length is 1 and column numbers are same with subfields of OutputStruct respectively. 
% Instead of OutputStruct 'NaN' case, here we have calculated values. 
% I am filling them with sample values here but their values are changing
% everytime we cycle in for loop and their column sizes stay the same 
NewStruct.SubField1 = 1:3;
NewStruct.SubField2 = 1;
NewStruct.SubField3 = 1:30;
NewStruct.SubField4 = 1:30;
% Here I have an if statement that will check some calculations happening between "if" line and "for" line.
if 
% Now my main issue is here. I want to assign all these subfield values of NewStruct to subfields of OutputStruct 
% with specific row increment value and I don't want to use an extra for loop. 
% For example, version with extra for loop solution is:
FieldNames = fieldnames(OutputStruct);
for j = 1:length(FieldNames)
% Here I am going to use increment "inc" for row index to fill the preallocated data with new values of NewStruct subfields.
% Due to if condition above, increment value can be without order like 4, 13, 42 .. etc
OutputStruct.(FieldNames{j})(inc,:) = NewStruct.(FieldNames{j});
end
% This approach solves the problem but it is time consuming. 
% I want to do exactly what this "for loop" does in one line of code.
end
% I asked a similar question yesterday but that case was a bit different.
%  Answers for that question were really helpful and saved me great time. 
% Can you please help me again? I would be very appreciated, if you could.
end
%Thank you all for your great effort