Help to make code into a for loop

Question

monkey_matlab 2016-2-4

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/266533-help-to-make-code-into-a-for-loop

编辑： Geoff Hayes 2016-2-4

采纳的回答： Geoff Hayes

在 MATLAB Online 中打开

Hello,

I would like to know how to go about making the following code into a for loop:

A1 = [0 1 0; 0 0 0; 0 0 1]
%fprintf('%f\n', A1);
rankA1 = rank(A1);
fprintf('Rank of A1 is %5.0d\n', rankA1);
[r,c] = size(A1);
nullityA1 = c - rankA1; 
fprintf('Nullity of A1 is %5.0d\n', nullityA1);
A2 = [4 1 -1; 3 2 0; 1 1 0]
rankA2 = rank(A2);
fprintf('Rank of A2 is %5.0d\n', rankA2);
[r,c] = size(A2);
nullityA2 = c - rankA2; 
fprintf('Nullity of A1 is %5.1d\n', nullityA2);
A3 = [1 2 3 4; 0 -1 -1 2; 0 0 0 1]
rankA3 = rank(A3);
fprintf('Rank of A3 is %5.0d\n', rankA3);
[r,c] = size(A3);
nullityA3 = c - rankA3; 
fprintf('Nullity of A3 is %5.0d\n', nullityA3);

The code after the matrices A1, A2 and A3 is basically the same except for the variables. Thanks for your help.

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Answer 1

Geoff Hayes 2016-2-4

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/266533-help-to-make-code-into-a-for-loop#answer_208480

编辑：Geoff Hayes 2016-2-4

在 MATLAB Online 中打开

monkey_matlab - try creating a cell array of the three matrices A1, A2 and A3. (A cell array is used since these three matrices are of different dimensions.)

 matrixData = cell(3,1);
 matrixData{1} = A1;
 matrixData{2} = A2;
 matrixData{3} = A3;
 for k=1:length(matrixData)
     mtxRank = rank(matrixData{k});
     fprintf('Rank of A%d is %d\n', k, mtxRank);
     [r,c] = size(matrixData{k});
     mtxNulity = c - mtxRank; 
     fprintf('Nullity of A%d is %d\n', k, mtxNulity);
 end