Hi mingcheng,
I understand you are trying to generate large number of instances of a variable and store them using a set or group function.
Unfortunately, in MATLAB there is no specific built-in data structure for sets and groups.
However, you can use Cell array for grouping the data to create and access the data conveniently.
Documentation for cell array: https://in.mathworks.com/help/matlab/ref/cell.html? searchHighlight=cell&s_tid=srchtitle_support_results_1_cell
% Example
numInstances = 10^4;
final_C = cell(numInstances, 1);
for itr = 1:numInstances
final_C{itr} = A; % each instance is stored in a separate cell element
end
% you can access the data for each instance of C conveniently without the need for a 4D matrix for C.
reqAns = final_C{n}(i,j,k); % to access (i,j,k)th element of nth instance.
Hope this helps!
