Storing outputs of nested for loop in a single row

Question

Sunny 2018-10-17

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/424586-storing-outputs-of-nested-for-loop-in-a-single-row

回答： Image Analyst 2018-10-17

Hi, I want to store the output of this nested for loop in a single row. The value of 'f' is a number. So I am trying to store the output of 'f' for different iterations in a single row with multiple columns(depends on a number of iterations and outputs).

for k = 1:30
              for l = 1:50
                      if exist(['ID_',num2str(k),'_file_',num2str(l),'_Var','.mat'],'file')
                          load(['ID_',num2str(k),'_file_',num2str(l),'_Var','.mat']);
                          A = A{1}; 
                          A = A / abs(eig(A));
                          B = B{1};  
                          C = C{1};
                          f = alignment_distance(A,B,C);
                      end
              end
          end

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Answer 1

Image Analyst 2018-10-17

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/424586-storing-outputs-of-nested-for-loop-in-a-single-row#answer_341949

在 MATLAB Online 中打开

Here is one pretty simple way:

index = 1;
for k = 1:30
  for l = 1:50
    fileName = sprintf('ID_%d_file_%d_Var.mat', k, l);
    fprintf('Processing %s\n', fileName);
    if exist(fileName, 'file')
      load(fileName);
      A = A{1};
      A = A / abs(eig(A));
      B = B{1};
      C = C{1};
      f(index) = alignment_distance(A,B,C);
      index = index + 1;
    else
      fprintf('   Skipping %s - file not found.\n', fileName);
    end
  end
end